B3171 Diagnostic Trouble Code

B3171 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 B3171 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Process Tips

Diagnostic trouble code B3171 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 B3171.

Fortunately, B3171 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3171 Trouble Code For Specific Cars

B3171 Lincoln Mkx Throttle/Pedal Position Sensor/Switch A Circuit High Input
B3171 Alfa Romeo 155 ABS Outlet Valve Coil RR Circuit Open
B3171 Suzuki Gsx
B3171 Kaiser Darrin Seat Headrest Motor Stalled
B3171 Mercedes Citan ABS Inlet Valve Coil Rear Circuit Short To Battery
B3171 Honda Jazz 2 Purge flow Sensor Circuit High Input
B3171 Lincoln Capri Throttle Position Input Out of Range Low