C0871 Diagnostic Trouble Code

C0871 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 C0871 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs.

Process Tips

Diagnostic trouble code C0871 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 C0871.

Fortunately, C0871 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0871 Trouble Code For Specific Cars

C0871 Moretti 1200 Battery Saver Relay Coil Circuit Short To Battery
C0871 Lada Samara Shift Solenoid C Control Circuit Low
C0871 Datsun 1200 Heater Coolant Temp sensor circuit Short to GND
C0871 Renault Scenic 4 High Mount Stop Lamp Circuit Failure
C0871 Tvr Speed Power Sliding Detent (Latch) Circuit Failure
C0871 Arrol-johnston 15.9 Air Suspension Rear Inflator Solenoid Output Circuit Short To Battery
C0871 Mazda Eunos TRS Circuit Intermittent Malfunction