U0175 Diagnostic Trouble Code

U0175 is a kind of OBD-II Diagnostic U-Network 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 U0175 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
Rich or lean exhaust

Possible Causes :

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

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. 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 U0175 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 U0175.

Fortunately, U0175 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0175 Trouble Code For Specific Cars

U0175 Healey Silverstone Passenger's Front Seat Up Switch Circuit Short to Battery
U0175 Lancia Zeta Steering Column Lock Switch Circuit Failure
U0175 Ac 5 AAI Circuit Malfunction
U0175 Firestone-columbus 5002 Left Rear Center Sensor Circuit Failure
U0175 Opel City Decklid Punch-Out Sensor Circuit Failure
U0175 Triumph Toledo Pedal Correlation PDS1 and PDS2
U0175 Dacia 1310 Fuel Temperature Sensor #2 Circuit Open