P2118 Diagnostic Trouble Code

P2118 is a kind of OBD-II Diagnostic P-Powertrain 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 P2118 diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon acceleration
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.
Defective ECU strategies or components will prevent proper regeneration

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code P2118 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 P2118.

Fortunately, P2118 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2118 Trouble Code For Specific Cars

P2118 Alldays 30 Air Bag Memory Clear Circuit Failure
P2118 Toyota Mr2 Spyder Output Speed Sensor Intermittent
P2118 Holden Astra Pedal Forward / Rearward Potentiometer Feedback Circuit Failure
P2118 Mitsubishi Galant Ix Autolamp Delay Increase Circuit Open
P2118 Triumph 1800 Passenger's Front Seat Up Switch Circuit Short to Battery
P2118 Mastretta Mxt Transmission Mechanical Transfer Case 4x4 Switch Circuit Short To Battery
P2118 Monteverdi Sierra Battery Saver Power Relay Circuit Failure