Don’t let the Check Engine light on your vintage Ford vehicle stress you out any longer.
With this post, you can understand the details entailing reading the OBD1 codes, identifying the defective part, and resetting the codes after replacing the faulty component.
Plus, we provide the complete Ford OBD1 codes for FREE Download here!
So, let’s get started!
Ford OBD1 Codes List and Definition [FULL]
Free Download: Full Ford OBD1 Trouble Codes List and Meaning PDF
Note: Use the search box in the tables below to quickly find the specific code you’re looking for.
2-Digit Codes List Table
Code | Definition |
---|---|
Code 11 | System PASS |
Code 12 | Cannot control rpm during KOER Sell-Test high rpm check |
Code 13 | Cannot control rpm during KOER Self-Test low rpm check |
Code 14 | PIP Circuit failure |
Code 15 | PCM Read Only Memory (ROM) teat failed |
Code 16 | Rpm too low to perform H02S test |
Code 18 | SPOUT circuit open |
Code 18 | IDM circuit failure/ SPOUT circuit grounded |
Code 19 | Failure In PCM Internal voltage |
Code 21 | ECT out of Self-Test range MAP/BARO out of Self-Test range |
Code 22 | MAP/BARO out of Self-Test range |
Code 23 | TP out of Self-Test range |
Code 24 | IAT out of Self-Test range |
Code 26 | MAF out of Self-Test range |
Code 29 | Insufficient input from the Vehicle Speed Sensor (VSS) |
Code 31 | EVP circuit below minimum voltage |
Code 32 | EVP voltage below closed limit |
Code 33 | EGR valve opening not detected |
Code 34 | EVP voltage above closed limit |
Code 35 | EVP circuit above maximum voltage |
Code 41 | HO2S circuit indicates system lean (right HO2S) |
Code 41 | No HO2S switch detected (right HO2S) |
Code 42 | HO2S circuit indicates system rich (right HO2S) |
Code 44 | Secondary Air Injection system Inoperative (right side) |
Code 45 | Secondary Air Injection upstream during Self-Test |
Code 46 | Secondary Air Injection not bypassed during Self-Test |
Code 51 | ECT Indicated -40 C (-40 F) /circuit open |
Code 53 | TP circuit above maximum voltage |
Code 54 | IAT Indicated -4000 (-40″F) /circuit open |
Code 56 | MAF circuit above maximum voltage |
Code 61 | ECT Indicated 123 C (254 F) / circuit grounded |
Code 63 | TP circuit below minimum voltage |
Code 64 | IAT indicated 123 C (254 F) I circuit grounded |
Code 66 | MAF circuit below minimum voltage |
Code 67 | Park/Neutral Position (PNP) switch circuit open – A/C on during Self-Test |
Code 77 | Brief WOT not sensed during Self-Test / Operator error |
Code 79 | A/C on/Defrost on during Self-Test |
Code 81 | Secondary -Air Injection Diverter (AIRD) solenoid circuit failure |
Code 82 | Secondary Air Injection Bypass (AIRS) solenoid circuit failure |
Code 84 | EGR Vacuum Regulator (EVR) circuit failure |
Code 85 | Canister Purge (CANP) circuit failure |
Code 87 | Fuel pump primary circuit failure |
Code 91 | HO2S circuit Indicates system loan (left HO2S) |
Code 91 | No HO2S switch detected (left HO2S) |
Code 92 | HO2S circuit indicates system rich (left HO2S) |
Code 94 | Secondary Air Injection system Inoperative (left side) |
Code 95 | Fuel pump secondary circuit failure |
3-Digit Codes List Table
Code | Definition |
---|---|
Code 111 | System checks OK |
Code 112 | Intake Air Temperature (IAT) sensor is/was low or grounded – IAT |
Code 113 | IAT sensor is/was high or open – IAT |
Code 114 | IAT sensor out of range – IAT |
Code 116 | Engine Coolant (ECT) sensor out of range – ECT |
Code 117 | ECT sensor is/was low or grounded – ECT |
Code 118 | ECT sensor is/was high or open – ECT |
Code 121 | Throttle Position (TP) sensor out of range – TPS |
Code 122 | TP low (possibly grounded or open circuit) – TPS |
Code 123 | TP is/was high or short to power – TPS |
Code 124 | TP voltage was higher than expected – Fuel control |
Code 125 | TP voltage was lower than expected – Fuel control |
Code 126 | MAP or BARO sensor out of range – “>MAP |
Code 128 | MAP vacuum has not been changing – check vacuum lines – “>MAP |
Code 129 | No MAP or Mass Air Flow sensor change during “goose” test – MAP MAF |
Code 136 | Oxygen sensor not switching/system lean Left or Front HO2S – Fuel control |
Code 137 | Oxygen sensor not switching/system rich Left or Front HO2S – Fuel control |
Code 138 | Fault in Cold Start Injector circuit – Fuel control |
Code 139 | Oxygen sensor not switching Left or Front HO2S – Fuel control |
Code 144 | Oxygen sensor not switching Single, Right or Rear HO2S – Fuel control |
Code 157 | Mass Air Flow signal is/was low or grounded – MAF |
Code 158 | MAF sensor is/was high or short to power – MAF |
Code 159 | MAF sensor is/was out of range – MAF |
Code 167 | No Throttle Position sensor change in “goose” test (must get at least 25% rotation) – TPS |
Code 171 | Oxygen sensor not switching – system was at adaptive limits – Single, Right or Rear HO2S – Fuel control |
Code 172 | Oxygen sensor not switching – system is or was lean – Single, Right or Rear HO2S – Fuel control |
Code 173 | Oxygen sensor not switching – system is or was rich – Single, Right or Rear HO2S – Fuel control |
Code 174 | Oxygen sensor was slow in switching Single, Right or Rear HO2S – Fuel control |
Code 175 | Oxygen sensor not switching – system was at adaptive limits – Left or Front HO2S – Fuel control |
Code 176 | Oxygen sensor not switching – system is or was lean Left or Front HO2S – Fuel control |
Code 177 | Oxygen sensor not switching – system was rich Left or Front HO2S – Fuel control |
Code 178 | Oxygen sensor was slow in switching Left or Front HO2S – Fuel control |
Code 179 | Fuel system was rich at part throttle Single, Right or Rear HO2S – Fuel control |
Code 181 | Fuel system was lean at part throttle Single, Right or Rear HO2S – Fuel control |
Code 182 | Fuel system was rich at idle Single, Right or Rear HO2S – Fuel control |
Code 183 | Fuel system was lean at idle Single, Right or Rear HO2S – Fuel control |
Code 184 | Mass Air (MAF) output higher than expected – Fuel control |
Code 185 | Mass Air (MAF) output lower than expected – Fuel control |
Code 186 | Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected – Fuel control |
Code 187 | Injector pulse width shorter than expected or Mass Air Flow (MAF) higher than expected – Fuel control |
Code 188 | Fuel system was rich at part throttle – Left or Front HO2S – Fuel control |
Code 189 | Fuel system was lean at part throttle – Left or Front HO2S – Fuel control |
Code 191 | Fuel system was rich at idle – Left or Front HO2S – Fuel control |
Code 192 | Fuel system was lean at idle – Left or Front HO2S – Fuel control |
Code 193 | Failure in Flexible Fuel (FF) sensor circuit – Fuel control |
Code 194 | Perform cylinder balance test to check for inoperative injectors |
Code 195 | Perform cylinder balance test to check for inoperative injectors |
Code 211 | Ignition PIP signal was erratic or missing – Ignition Systems |
Code 212 | Ignition TACH signal was erratic (module/wiring) or SPOUT circuit fault – Ignition Systems |
Code 213 | Ignition SPOUT or SAW circuit open or shorted – Ignition Systems |
Code 214 | Error in Cylinder ID (CID) circuit or signal – Ignition Systems |
Code 215 | Primary circuit failure – ignition coil 1 – Ignition Systems |
Code 216 | Primary circuit failure – ignition coil 2 – Ignition Systems |
Code 217 | Primary circuit failure – ignition coil 3 – Ignition Systems |
Code 218 | IDM signal open or high or left coil pack failure – Ignition Systems |
Code 219 | SPOUT circuit failure, timing defaulted to 10 degrees – follow code 213 diagnosis |
Code 222 | IDM open or high or right coil pack failure – Ignition Systems |
Code 223 | Dual Plug (DPI), SPOUT or IDM circuit fault – Ignition Systems |
Code 224 | Failure in ignition coil primary circuit – Ignition Systems |
Code 225 | Knock sensor not tested (ignore if not pinging) – KS |
Code 226 | Ignition Diagnostic Monitor (IDM) signal fault – Ignition Systems |
Code 232 | EI primary coil circuit failure – Ignition Systems |
Code 238 | EI primary circuit failure – ignition coil 4 – Ignition Systems |
Code 311 | AIR system not working – Single, Right or Rear HO2S – Air Injection |
Code 312 | AIR not diverting – Air Injection |
Code 313 | AIR not bypassing – Air Injection |
Code 314 | AIR inoperative, Left or Front HO2S – Air Injection |
Code 326 | Pressure Feedback EGR shows low pressure EGR not seating or not seating intermittantly – PFE |
Code 327 | EGR feedback signal is/was low – EVR or PFE |
Code 328 | EGR Valve Position (EVP) is/was low – EVR |
Code 332 | EGR did not open/respond during test or if memory code, did not open intermittantly – EVR or PFE |
Code 334 | EVP sensor is/was high – EVR |
Code 335 | EGR feedback signal is/was out of range – EVR or PFE |
Code 336 | PFE sensor signal is/was was high – “>PFE |
Code 337 | EGR feedback signal is/was was high – EVR |
Code 338 | Cooling system did not heat up (check cooling system / thermostat operation) |
Code 339 | Cooling system overheated (check cooling system / thermostat operation) |
Code 341 | Octane jumper installed (information only code to notify you if it is installed) |
Code 411 | Idle speed system not controlling idle properly (generally idle too high) – ISC |
Code 412 | Idle speed system not controlling idle properly (generally idle too low) – ISC |
Code 452 | Vehicle Speed Sensor (VSS) problem |
Code 511 | No power to PCM pin 1 or bad PCM (processor) |
Code 512 | Memory power (PCM pin 1) was interrupted – Was battery disconnected ? |
Code 513 | Replace processor (PCM) (internal failure) |
Code 519 | PSP switch/circuit open – PSP h Pedal Position (CPP) circuit fault – PNP |
Code 521 | Wheel not turned during test or PSP problem – PSP |
Code 522 | Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault – PNP transmission MLP sensor out of range in park – Transmissions |
Code 524 | Problem in low speed fuel pump circuit – Power / Fuel Pump Circuits |
Code 525 | Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault – PNP |
Code 528 | System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch) – PNP |
Code 529 | Data Communications Link to processor failure Service any EEC codes, erase memory and retest If code is still present refer to instrument cluster diagnosis manual |
Code 533 | Data Communications Link to instrument cluster failure – see 529 |
Code 536 | Brake On Off open or shorted to ground – BOO |
Code 538 | System did not receive “goose” test – TESTS |
Code 539 | System shows voltage at PCM pin 10 Is A/C on ? |
Code 542 | Fuel pump open, bad ground or always on – – Power / Fuel Pump Circuits |
Code 543 | Fuel pump monitor circuit shows no power – Power / Fuel Pump Circuits (Service 556 code first if present) Fuel pump relay or battery power feed was open – Power / Fuel Pump Circuits |
Code 551 | Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit – Solenoids |
Code 552 | AIRB solenoid/circuit failure – Solenoids |
Code 553 | AIRD solenoid/circuit failure – Solenoids |
Code 554 | Fuel Press Regulator Control solenoid/circuit fault – Power / Fuel Pump Circuits |
Code 556 | Fuel pump relay primary circuit fault – Power / Fuel Pump Circuits |
Code 557 | Low speed pump relay primary circuit fault – Power / Fuel Pump Circuits |
Code 558 | EGR vacuum regulator solenoid/circuit failure – EVR or PFE or Solenoids |
Code 559 | A/C relay primary circuit fault – A/C and Fan Circuits |
Code 563 | High Fan Control (HFC) circuit failure – A/C and Fan Circuits |
Code 564 | Fan Control (FC) circuit failure – A/C and Fan Circuits |
Code 565 | Canister Purge 1 solenoid/circuit failure – Solenoids |
Code 566 | transmission 3/4 shift solenoid/circuit – Transmissions |
Code 569 | Canister Purge 2 solenoid/circuit failure – Solenoids |
Code 578 | A/C pressure sensor VREF short to ground – A/C and Fan Circuits |
Code 579 | ACP sensor did not change with A/C on – A/C and Fan Circuits |
Code 581 | Cooling fan current was excessive – A/C and Fan Circuits |
Code 582 | Open cooling fan circuit – A/C and Fan Circuits |
Code 583 | Fuel pump current was excessive – Power / Fuel Pump Circuits |
Code 584 | Open power ground circuit – Power / Fuel Pump Circuits |
Code 585 | A/C clutch current was excessive – A/C and Fan Circuits |
Code 586 | Open circuit in A/C clutch – A/C and Fan Circuits |
Code 587 | Communication problem between PCM and Variable Control Relay Module (VCRM) – Power / Fuel Pump Circuits |
Code 617 | Transmission shift failure (1/2 shift) – Transmissions |
Code 618 | Transmission shift failure (2/3 shift) – Transmissions |
Code 619 | Transmission shift failure (3/4 shift) – Transmissions |
Code 621 | Solenoid/circuit failure – shift solenoid 1 – Transmissions |
Code 622 | Solenoid/circuit failure – shift solenoid 2 – Transmissions |
Code 624 | Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high – Transmissions |
Code 625 | Solenoid/circuit failure – Electronic Pressure Control (EPC) current is low – Transmissions |
Code 626 | Transmission Coast Clutch (CCS) Solenoid/circuit fault – Transmissions |
Code 627 | Torque Converter Clutch circuit fault – Transmissions |
Code 628 | Excessive converter clutch slippage – Transmissions |
Code 629 | Torque Converter Clutch circuit fault – Transmissions |
Code 631 | Overdrive Cancel Light circuit problem – Transmissions |
Code 632 | E4OD – Transmission Control Switch (TCS) should be cycled once between engine ID and Goose test |
Code 633 | 4x4L switch should be in 4×2 or 4×4 high for the test |
Code 634 | Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault Electronic shift transmission – Manual Lever Position (MLP) sensor out of range in Park-Transmissions |
Code 636 | Transmission Oil Temperature (TOT) sensor out of range – Transmissions |
Code 637 | TOT sensor is/was high or open – Transmissions |
Code 638 | TOT sensor is/was low or grounded – Transmissions |
Code 639 | Transmission Speed sensor (TSS) circuit fault – Transmissions |
Code 641 | Transmission solenoid/circuit failure Shift Solenoid 3 – Transmissions |
Code 643 | Torque Converter Clutch (TCC) circuit – Transmissions |
Code 645 | Transmission 1st gear failure – Transmissions |
Code 646 | Transmission 2nd gear failure – Transmissions |
Code 647 | Transmission 3rd gear failure – Transmissions |
Code 648 | Transmission 4th gear failure – Transmissions |
Code 649 | Transmission EPC system failure – Transmissions |
Code 651 | Transmission EPC solenoid/circuit fault – Transmissions |
Code 652 | Torque Converter Clutch (TCC) circuit fault – Transmissions |
Code 654 | Transmission selector not in PARK – Transmissions |
Code 656 | Torque Converter Clutch (TCC) slip – Transmissions |
Code 657 | Transmission temperature was excessive – Transmissions |
Code 998 | Did not pass Key On Engine Off test yet (Get 111 in KOEO first) Transmission Electronic Pressure Control (EPC) solenoid/circuit fault – Transmissions |
How To Read Ford OBD1 Codes Without A Scanner (Self-test Procedure)
The most uncomplicated procedure to run a self-test to read OBD1 codes is performing a “Key On Engine Running” (KOER) test
Ford Motor Company equips its vehicles with a self-diagnosing system, allowing for easier detection of faulty components and sensors without rushing to a mechanic.
The system was introduced in cars manufactured between 1982-1995. The self-diagnostic system records error codes emitted by faulty components and shares the information with the driver.
You can quickly look up the error codes online to identify the defective part.
To initiate self-diagnosis, you first need the following items to assist you in recording the OBD1 error codes.
Firstly, you’ll need an unrolled paper clip, a jumper cable, a piece of paper, and a pen.
A clipboard may come in handy, although it is not a requirement.
Next, you’ll need to get your engine to optimal running temperatures by running the engine idle for 5-10 minutes.
The test described below is called the “Key On Engine Running” (KOER) test.
Here is what to do:
- Under the hood, locate the diagnostic box. It is often found on the driver’s side against the firewall but could also be located on the passenger’s side. The plug is housed in a plastic casing inscribed “EEC Test.”
- Using the paper clip or the jumper cable, insert one of its ends on the top right pin of the first plug and the other end to the pin in the singular connector plug.
- Immediately start the car’s engine again, and have a pen and paper close by to record the OBD1 error codes.
- You’ll read the codes by identifying the number of flashes the check engine light illuminated.
- The first set of flashes indicates the number of cylinders your vehicle has. If you run on a 6-cylinder engine, it will flash three times; and four times if you’re on an 8-cylinder engine.
- Next, you’ll need to wait for a couple of seconds, usually 30 – 60 seconds, for the vehicle to complete the self-diagnostic test.
- The first time the vehicle will illuminate once. This sign informs you to perform the goose test, which involves turning the steering wheel halfway through left and right, stepping on the brake pad, and holding on to the throttle to rev up the engine.
- Depending on your vehicle’s make, it will display 2 or 3-digit codes. You’re advised to confirm which format your vehicle model uses. Nevertheless, vehicles between 1986-1991 display them in twos, whereas the models between 1992-1994 display them in threes.
- You should count the number of flashes and record them on a piece of paper. It is advised that you have a partner to aid in reading or writing the number of illuminating flashes. You should note that long pauses between flashes indicate that you’re proceeding to the following code. Otherwise, keep counting through the flashes.
- The vehicle iterates through the OBD1 codes twice before exiting the self-diagnostic test. Look up those codes to find out the dysfunctional component.
Additional Methods To Read OBD1 Codes Without A Scanner
There are a ton of ways you may use to read the OBD1 codes. If you’re the kind of person to explore a new way of doing things, then here are a couple of techniques to go with.
Using an Analog Voltmeter
Firstly, you should connect the analog voltmeter to the ECU through the data link connector under the engine’s hood.
The data connector has two plugs. Use a jumper cable to connect pin 2 in the first plug to the other pin in the second single-pin plug.
You can take the reading by connecting the negative terminal of the voltmeter to pin 4 in the first plug and the positive terminal to the battery’s positive side.
If an error code is registered, the analog voltmeter will alert you by sweeping the voltmeter needle across its display.
Using a Message Center
Hold the select, checkout, and reset button simultaneously on the electronic instrument cluster.
To perform the “Key On Engine Off” test, also referred to as (KOEO), hold the above three buttons before turning on the ignition and then releasing the buttons.
Performing the “Key On Engine Running” test (KOER) is done by holding the three buttons and turning on the ignition before releasing the buttons.
Models between 1987-1990 require one to press the select button thrice, whereas models between 1991-1995 need one to hold the gauge select button thrice until “DEALER 4” is shown.
You should note that all models require one to initiate a self-test using a jumper cable to loop through STI and SIG RTN connectors.
Basic codes while using the message center:
The vehicles will display code 4255 to indicate entering of KOEO self-test.
They will show a base readout of 4030 to inform that KOER has been entered. Next, the DTC’s will output RH followed by three-digit codes.
Finally, code 4011, the service passcode, will be displayed. You should note that all models will exit the self-test when the ignition is turned off.
Using Overdrive Cancel/ Transmission MIL
Models equipped with an E40D transmission system and a 7.3L diesel engine perform the KOEO self-test by flashing the OCIL/ TMIL lamp.
Toggling the OSC once keeps the lamp off, indicating that the vehicle can achieve the overdrive gear position.
Similarly, toggling may result in the light staying on to stop the car from shifting in an overdrive position.
Receiving DTC 99 will evaluate to fault with the EPC (Electronic Pressure Control) circuit of the E40D transmission system. Under such conditions, the lamp will serve as the TMIL (Transmission Malfunction Indicator Lamp).
How To Read OBD1 Codes On Ford With A Scanner
The OBD1 scanner is used to read the trouble codes in vehicles manufactured between 1982-1995. It utilizes two tests to read the error codes recorded by the ECU (engine control unit).
They are the “Key On Engine Off” and the “Key On Engine Running” tests. To perform this test, you should first locate the diagnostic box within the engine compartment and ensure the engine is warmed up before starting the test.
Here is the procedure for reading OBD1 codes on Ford using Innova 3145:
- Uncover the EEC Test case and plug in the code reader.
- The first test is the key on engine off. It begins by starting the vehicle’s electronic components without cranking up the engine. Next, it proceeds as indicated.
- Switch on the code reader, then press and hold the test button to begin the test. An arrow should show up on the display screen of the code reader to indicate that the OBD1 scanner has successfully connected to the ECU.
- It takes about 10 seconds for the codes to start displaying on the display panel. Record the said codes using a pen and paper.
- Next, the OBD1 will display a 10 to indicate no more readable codes, then code 111 indicating that the test is complete. After this step, you can switch off the code reader.
- Finally, you will perform a “Key On Engine Running” test, which proceeds as follows.
- Crank up the engine and turn on the code reader. Press and hold the test button to commence the process.
- The first display shows the number of cylinders the engine has. Next, you will perform the following steps to negate corresponding errors. Do a half turn if your car includes a power steering, press the cancellation button if your vehicle provides overdrive, and hold the brake pedal if your vehicle has an on and off brake switch.
- The code “10” will appear then you’ll have to wait for another 30 to 60 seconds for the codes to appear on display.
- Record the error codes on a piece of paper. Finally, a “10” would display once more to indicate no more readable codes, then code 111 indicates the test’s end. Switch off the code reader and the engine after this.
How To Clear Ford OBD1 Codes
Pulling The ECU Fuse For 15 To 30 Seconds
The easiest and most common method to clear DTCs is pulling the ECU fuse for 15 to 30 seconds. You don’t have to jerk off the battery’s negative terminal, as the process will reset the ECU. Drive for 75+ miles, then run the self-test once more using a jumper cable or paper clip to verify if the trouble codes were erased.
Some Other Methods For Specific Vehicles
For EEC-V & DI 7.3L Turbo Diesel
You can reset the PCM by disconnecting the ground cable to the battery for five minutes or using the NGS (New Generation Star) tester. Disconnecting the battery’s ground cable to clear DTCs will result in the rough operation of the vehicle for the first few miles. However, normalcy will resume when the adaptive values are relearned.
For EEC-IV Continuous Memory
- Initiate the KOEO self-test.
- Deactivate the self-test as soon as DTCs start to display as follows:
- Position the central button to the STAR tester in the up position.
- If the test was conducted using an analog voltmeter or an Ohmmeter, dislodge the jumper cable from the self-test input connector and self-test return pin connector.
- Press the STOP button if the test was done using an NGS tester.
- For test results, read through the engine check light, message center, and OCIL, remove the jumper cable from the self-test signal return pin and the input connector of the self-test.
- On completion, the continuous streams of DTCs would have been erased.
For Keep Alive Memory (KAM)
You’ll need to disconnect and isolate the negative battery cable for at least five minutes to clear the keep alive memory. Afterward, driving for at least 10 miles for the vehicle’s processor to relearn the values is necessary.
For Merkur 2.9L & 85–88 2.3L Engine
- You’ll first need to initiate the KOEO self-test.
- Immediately after receiving the first error code, disconnect the jumper wire from the self-test input terminals.
- Repeat the self-test once more with the jumper wire to confirm that the DTCs are erased.
For Aspire, Capri (1.6L), Escort & Tracer (1.8L), Probe (2.0L w/4EAT, 2.2L & 2.5L) & 88–93 Festiva
- Start the KOEO self-test.
- Immediately you receive the first error code, unlatch the push button located on the Super Star II Tester.
- Disconnect, then isolate the battery’s ground cable before pressing and holding the brake pedal for about 5 to 10 seconds.
- Finally, conduct the self-test to verify the DTCs are erased.
For Mercury Villager
All other DTCs can be erased using each of these methods except that of a malfunctioning indicator lamp. After disconnecting the battery’s ground cable, stored DTC in the backup memory will be erased after 24 hours. If you’re using an NGS tester, select the Diagnostic Test Mode Results before pressing the CLEAR button.
Here are the steps to adhere to erase DTC resulting from a malfunctioning indicator lamp:
- Firstly, actuate the diagnostic test mode.
- Next, disconnect the DTC.
- While utilizing the suitable jumper cable, loop through wires BL/W and GY/BL.
- Remove the jumper cable after waiting for about two seconds before reconnecting the DTC.
- Although the MIL will remain on, the DTCs will have been erased.
For MCU System
MCU systems don’t contain KAM to store service DTCs. Therefore, DTCs are cleared on switching the ignition off.
Final Thoughts
Your vintage Ford vehicle is a piece of history, and keeping it running smoothly is a labor of love. That’s why our comprehensive guide to Ford OBD1 codes is here to provide you with the knowledge to take care of your classic ride.
If you have any questions, comments, or success stories about using our guide to Ford OBD1 codes, please let us know in the comments section below. Your voice can assist other vintage Ford owners in their car maintenance journey.
But don’t stop there!
We also have a review of OBD1 scanners that can help you find the perfect scan tool for your vehicle.
Thanks for spending time reading our post! We hope you found it helpful and informative.
References
Ford OBD Trouble Codes, freeautomechanic.com