B0871 Diagnostic Trouble Code

B0871 is a kind of OBD-II Diagnostic B-Body 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 B0871 diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
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.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code B0871 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 B0871.

Fortunately, B0871 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0871 Trouble Code For Specific Cars

B0871 Lancia Megagamma Split Air #2 Circuit Malfunction
B0871 Renault 30 Gear Control Malfunction 2,3,5
B0871 Fiat Sedici Lateral Accelerometer Signal Fault
B0871 Toyota Mrj Output Speed Sensor No Signal
B0871 Cottin-desgouttes 20 Fuel Shutoff Valve Control Circuit Low
B0871 Bmw 1600 Cam Sensor Fault
B0871 Chevrolet Cruze Driver Window Up / Down Power Circuit Short to Ground