P099E Diagnostic Trouble Code

P099E 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 P099E diagnostic trouble code may include:

Possible spark knock (detonation / pre-ignition)
Poor fuel economy
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
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.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code P099E 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 P099E.

Fortunately, P099E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P099E Trouble Code For Specific Cars

P099E Hillman 40 Passenger's Seat Recline Back Switch Circuit Short to Battery
P099E Stearns Knight B Lamp Park Input Circuit Short To Battery
P099E Mg Yb Ambient Air Temperature Sensor Circuit Low
P099E Honda Acura Tsx Pressure Control Solenoid C Control Circuit High
P099E Suzuki Sx4 Mirror Driver Switch Assembly Circuit Open
P099E Porsche Boxster Type 981 Fuel Pressure Regulator 1 Control Circuit High
P099E Nissan Patrol Cooling Fan 1 Control Circuit Malfunction