BMW P1386: Control Module Self-Test, Knock Control Circuit Baseline Test (Bank 1)
Is your scanner showing BMW P1386?
No worries. We'll show you what it means and how to deal with it.
BMW P1386: Control Module Self-Test, Knock Control Circuit Baseline Test (Bank 1)
OVERVIEWWhat Does The BMW P1386 Code Mean?
Engine started, vehicle driven at 1520rpm for 10 seconds or to a temperature of 40 degrees Celsius, and the DME detected the Knock chip is defective. The engine speed is greater than 2080rpm but less than 6000rpm.
What Are The Potential Causes Of The BMW P1386 Code?
Below are some potential causes of this DTC:
- Knock sensor circuit is open
- Knock sensor is loose (tighten to 20 NM)
- Contact between the knock sensor and cylinder block is dirty, corroded or greasy
- Knock sensor circuit is shorted to ground, or shorted to power
- Knock sensor is damaged
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Bosch 0261231200 Original Equipment Engine Knock Sensor
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
BMW P1386, DTCDECODE.
