C3873 Nissan Frontier OBD Code

OBD/2 C3873 error code description and symptoms.

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.

C3873 Nissan Frontier Error Code Repair Process :

If your left rear center sensor circuit short to vbat check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C3873 and engine control unit are in charge of monitoring a bunch of different left rear center sensor circuit short to vbat, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Nissan Frontier C3873 OBD2 Code

A common cause of code C3873 is the failure of Left Rear Center Sensor Circuit Short to Vbat, but there are several other possible causes as well, such as ;

Exhaust tube
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Fuel Injectors circuit poor electrical connection
Variable Camshaft Timing (VCT) position circuit poor electrical connection

C3873 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.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C3873 Nissan Frontier OBD Code

C3873 Nissan Frontier Error Code Repair Process :

Common Causes of Nissan Frontier C3873 OBD2 Code

C3873 code for other Nissan cars