B012F Diagnostic Trouble Code

B012F 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 B012F 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code B012F 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 B012F.

Fortunately, B012F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B012F Trouble Code For Specific Cars

B012F Plymouth Prowler Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
B012F Holden Vh Power Window RR Motor Circuit Short To Ground
B012F Goliath Gp Passenger Door Ajar Circuit Short To Ground
B012F Chevrolet Zafira Engine Coolant Temperature Circuit Range/Performance Problem
B012F Daf 46 Gear Lever X Position Circuit
B012F Hyundai Coupe SCP (J1850) Invalid Data from GEM
B012F Porsche 935 Fuel Level Input Circuit Low