P0775 Diagnostic Trouble Code

P0775 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 P0775 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 :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code P0775 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 P0775.

Fortunately, P0775 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0775 Trouble Code For Specific Cars

P0775 Vauxhall Royale Pressure Control Solenoid C Control Circuit / Open
P0775 Citroen Eco Fuel level Sensor Circuit High Input
P0775 Maserati 3200 Gt Transmission Component Slipping/ Transmission Mechanical Transfer Case 4x4 Switch Circuit Failure
P0775 Holden Vn Pressure Control Solenoid "A" Open Circuit
P0775 Fiat Talento Left Front Center Sensor Circuit Short to Vbat
P0775 Nissan M 45 Column Tilt Feedback Potentiometer Circuit Short to Ground
P0775 Ds Ds 5 Ignition/Distributor Engine Speed Input Circuit Malfunction