P212D Diagnostic Trouble Code

P212D is a kind of OBD-II Diagnostic P-Powertrain 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 P212D diagnostic trouble code may include:

Fuel pressure too high
Diminished fuel efficiency
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 :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. 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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code P212D 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 P212D.

Fortunately, P212D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P212D Trouble Code For Specific Cars

P212D Singer 9 Internal Voltage Regulator Malfunction
P212D Saturn Sl1 Inductive Signature Chip Communication Error
P212D Seat 1500 Injector Circuit Malfunction - Cylinder 5
P212D Cottin-desgouttes 12 Fuel Shut Off Solenoid Malfunction
P212D Opel Rekord Door Ajar RR Circuit Short To Battery
P212D Edsel Villager Injection Control Pressure Out Of Range Low
P212D Hrg 1100 Ride Control LR Shock Actuator Circuit Short To Ground