Acura P1133: HO2S-11 (Bank 1 Sensor 1) Insufficient Switching
Is your scanner showing Acura P1133?
No worries. We'll show you what it means and how to deal with it.
Acura P1133: HO2S-11 (Bank 1 Sensor 1) Insufficient Switching
OVERVIEWWhat Are The Potential Causes Of The Acura P1133 Code?
Below are some potential causes of this DTC:
- Air leaks after the MAF sensor, or in the EGR or PCV system
- Exhaust leaks before or near where the front HO2S is mounted
- Fuel control sensor is out of calibration (i. e. , ECT, IAT or MAP)
- Fuel delivery system supplying too much or too little
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Acura Engine Control Module
>>> ZBN 234-5010 Oxygen O2 Sensor Upstream Front and Rear
>>> MAYASAF EGR Valve EGV658 Exhaust Gas Recirculation Valve
>>> Mass Air Flow Sensor MAF Sensor Compatible with Acura MDX RDX RL TL
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Acura P1133, DTCDECODE.
