P01D2 Diagnostic Trouble Code

P01D2 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 P01D2 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P01D2 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 P01D2.

Fortunately, P01D2 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P01D2 Trouble Code For Specific Cars

P01D2 Dinfia Cw Hydraulic Pump Relay Circuit Range/Performance
P01D2 Audi 50 Already Programmed (Test Mode DTC Only !!!)
P01D2 Holden Berlina Pedal Position Not Available
P01D2 Daewoo Arcadia Fuel Trim Malfunction (Bank 1)
P01D2 Fioravanti Sensiva Left Rear Backup Lamp Circuit Short to Battery
P01D2 Porsche 901 Front Wiper Motor Relay Circuit Open (changed from Failure 2/6/97)
P01D2 Volkswagen Phaeton Right Tail Lamp Circuit Failure