C2844 Diagnostic Trouble Code

C2844 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 C2844 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code C2844 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 C2844.

Fortunately, C2844 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2844 Trouble Code For Specific Cars

C2844 Ferrari Dino Interior Lamp Override Switch Short to Ground
C2844 Volkswagen Sharan SCP (J1850) Communication Bus Fault
C2844 Moretti Spider Boost Calibration Low
C2844 Darracq 8 Heated Catalyst Temperature Below Threshold (Bank 1)
C2844 Laraki Fulgura System Power Relay Circuit Short to Battery
C2844 Mazda Demio 3 Transmission Transfer Case Shift Motor Short Circuit To Ground
C2844 Aston Martin Db4 Air Suspension RR Air Spring/Shock Solenoid Output Circuit Short To Battery