C3349 Diagnostic Trouble Code

C3349 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 C3349 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Faulty IMRC actuator/sensor

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code C3349 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 C3349.

Fortunately, C3349 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3349 Trouble Code For Specific Cars

C3349 Pontiac Sunfire Four Wheel Drive (4WD) Switch Circuit
C3349 Arnolt Bristol Air Suspension Rear Height Sensor Low Signal Circuit Short To Battery
C3349 Opel Corsa C Decklid Release Circuit Short To Ground
C3349 Mitsubishi Toppo B+ Supply To VCRM Fan Circuit Malfunction
C3349 Napier 18 Camshaft Position Sensor Circuit Malfunction
C3349 Hyundai Centennial SBDS Interactive Codes
C3349 Toyota 105 Multiple Gears Engaged