C3871 Trouble Code

View C3871 obd/2 error code description and symptoms. C3871 engine photo

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

Difficulty Level (Easy)
Level
Repair Time (20 Min.)
Time
Cost Prediction : $ 70-120

C3871 Error Code Repair Process :

For right rear sensor circuit failure check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C3871 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks right rear sensor circuit failure with your car's computers to find out exactly what's prompting the light to turn on.

Wrench Tool C3871 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C3871

A common cause of code C3871 is the failure of Right Rear Sensor Circuit Failure, but there are several other possible causes as well, such as ;

C3871 code for all cars

You can view according C3871 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3871 Bugatti Type 13 +C3871 Porsche Cayenne Type 92a +C3871 Davrian Imp +C3871 Triumph Super +C3871 Sunbeam Chamois

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