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 Ford 427 LF CORNER LAMP OUTPUT Ckt Short to Battery
C0349 Fiat Egea Lamp Seat Belt Circuit Open
C0349 Hyundai Satellite SCP (J1850) Invalid or Missing Data for Door Locks
C0349 Mini Iii ASM Control Circuit Low
C0349 Mercury Grand Air Suspension LR Corner Down Timeout
C0349 Armstrong Siddeley 18 Air Suspension LR Height Sensor Circuit Short To Battery
C0349 Morris Traveller Cam Control Fault