C0872 Diagnostic Trouble Code

C0872 is a kind of OBD-II Diagnostic C-Chassis Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a C0872 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Some aftermarket accessories and performance modifications

Repair Processes :

Now, clear the codes and test-drive the vehicle to see if the code is reset. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code C0872 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before C0872.

Fortunately, C0872 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0872 Trouble Code For Specific Cars

C0872 Maudslay 2-l Transmission Range Display Circuit Malfunction
C0872 Geely Hq O2 Sensor Signals Swapped Bank 1 Sensor 1/ Bank 2 Sensor 1
C0872 Citroen Nemo Fuel Pump Primary Circuit Malfunction
C0872 Marcos Mini Transmission 4-Wheel Drive High Indicator Open Circuit
C0872 Bmw 525 Chime Input Request Circuit Short To Battery
C0872 Nissan Cq-x Clutch Actuator Circuit High
C0872 Saturn Sky Incorrect Module Configuration