C0145 Diagnostic Trouble Code

C0145 is a kind of OBD-II Diagnostic C-Chassis 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 C0145 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
Lack of power

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.
Some aftermarket accessories and performance modifications

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. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code C0145 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 C0145.

Fortunately, C0145 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0145 Trouble Code For Specific Cars

C0145 Pontiac Fiero Exhaust Pressure Sensor Malfunction
C0145 Dodge M Ignition Key-In Circuit Open
C0145 Talbot Alpine Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Ground
C0145 Renault Laguna 2 Gyroscope Error
C0145 Chrysler Crossfire Engine Speed Input Circuit Range/Performance
C0145 Vemac Rd PSPS Out Of Self Test Range
C0145 Ford F-250