P2499 Diagnostic Trouble Code

P2499 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 P2499 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
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.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code P2499 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 P2499.

Fortunately, P2499 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2499 Trouble Code For Specific Cars

P2499 Cadillac Calais Data Output Link Circuit Failure
P2499 Talbot-lago America Mirror Passenger Up Circuit Failure
P2499 Citroen Sm Fuel Pump Secondary Circuit Malfunction
P2499 Bmw L Clutch Actuator Circuit High
P2499 Ford Megastar Mirror Driver Vertical Feedback Potentiometer Circuit Open
P2499 Wolseley 12
P2499 Porsche Boxster Type 987 Fuel Pressure Regulator 1 Performance