C3047 Diagnostic Trouble Code

C3047 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 C3047 diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. 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.

Process Tips

Diagnostic trouble code C3047 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 C3047.

Fortunately, C3047 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3047 Trouble Code For Specific Cars

C3047 Sovam 850 Lamp Backup Switch Input Circuit Short To Battery
C3047 Daimler Sp Heated Backlite Relay Circuit Open
C3047 Panhard Et Levassor X Driver Power Window One Touch Window Relay Circuit Failure
C3047 Nsu Ro Cylinder 11 Misfire Detected
C3047 Tata Vista Mirror Passenger Vertical Switch Circuit Short To Battery
C3047 Alfa Romeo Rm Air Bag Crash Sensor #1 Ground Circuit Short To Ground
C3047 Dodge Monaco Ignition Retard Request Duration Fault