C0847 Diagnostic Trouble Code

C0847 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 C0847 diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
Rich or lean exhaust

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. 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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code C0847 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 C0847.

Fortunately, C0847 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0847 Trouble Code For Specific Cars

C0847 Daewoo Bucrane Fuel Volume Regulator Control Circuit High
C0847 Jaguar Xka Seat Driver Rear Down Circuit Failure
C0847 Studebaker Hawk Lamp Turn Signal Right Circuit Short To Battery
C0847 Pontiac G6 Exhaust Valve Control Solenoid Circuit (Bank 1)
C0847 Reliant Rebel Gate Select Actuator Circuit Low
C0847 Ford Concept MAF Ground Malfunction
C0847 Fiat Legram Lamp Turn Signal Front Output Circuit Short To Battery