C0349 Diagnostic Trouble Code

C0349 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 C0349 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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 C0349 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 C0349.

Fortunately, C0349 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0349 Trouble Code For Specific Cars

C0349 Turner 950 Pedal Position Sensor C Circuit Intermittent
C0349 Simca 1500 Intake Valve Control Solenoid Circuit High (Bank 1)
C0349 Hillman Hunter Passenger's Seatbelt Tension Reducer Circuit Short to Ground
C0349 Sheffield-simplex 50 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
C0349 Toyota Hi-ace Oil Change Reset Button Circuit Short To Ground
C0349 Alfa Romeo 2600 Accelerate Warmup Solenoid Circuit Malfunction
C0349 Ferrari C62 Interior Fan Control Circuit Open