P0D71 Diagnostic Trouble Code

P0D71 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 P0D71 diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Dirty air cleaner element Damaged DPF

Repair Processes :

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. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P0D71 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 P0D71.

Fortunately, P0D71 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0D71 Trouble Code For Specific Cars

P0D71 Pontiac Sv Four Wheel Drive (4WD) Switch Circuit High
P0D71 Nissan Axy Climate Control Air Temperature Internal Sensor Motor Circuit Short To Ground
P0D71 Honda Nsx Rear Cargo Door Lock Circuit Short to Ground
P0D71 Lada 119 Servo Motor Vent Circuit Failure
P0D71 Chrysler 300m Engine Oil Temperature Sensor High
P0D71 Buick 60 Cylinder 4 Injector Circuit High
P0D71 Vauxhall Vx Pressure Transducer Main / Primary Input Circuit Failure