P305D Diagnostic Trouble Code

P305D 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 P305D diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

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)
Dirty air cleaner element Damaged DPF

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. 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.

Process Tips

Diagnostic trouble code P305D 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 P305D.

Fortunately, P305D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P305D Trouble Code For Specific Cars

P305D Renault 9 Gear select position Fault
P305D Simca Plein Interior Scanning Sensor Circuit Failure
P305D Overland 42 Double Locking Door Motor Frozen
P305D Proton Preve Fuel Stepper Motor Malfunction
P305D Mazda Verisa A/C Evaporator Air Temperature Circuit Range/Performance
P305D Caterham Super Door Handle Right Front Circuit Failure
P305D Pontiac Grande Parisienne Express Window Down Switch Circuit Short to Battery