P2498 Diagnostic Trouble Code

P2498 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 P2498 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
Diminished fuel efficiency

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

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. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code P2498 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 P2498.

Fortunately, P2498 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2498 Trouble Code For Specific Cars

P2498 Nissan Az-1 Climate Control On/Off Switch Circuit Failure
P2498 Mercury Comet Air Suspension LR Air Spring/Shock Solenoid Output Circuit Failure
P2498 Rover Ccv Ignition Coil F Primary/Secondary Circuit Malfunction
P2498 Dodge Stratus Ii Ignition Switch Illegal Input Code
P2498 Ferrari 208 Injector High Side Short To GND Or VBATT - Bank 1
P2498 Saab 95 Ignition Start Circuit Short To Ground
P2498 Venturi 400 Pump Rotor Control Underfueling