U0098 Diagnostic Trouble Code

U0098 is a kind of OBD-II Diagnostic U-Network 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 U0098 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Some aftermarket accessories and performance modifications

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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code U0098 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 U0098.

Fortunately, U0098 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0098 Trouble Code For Specific Cars

U0098 Mazda Midge Turbocharger Boost Sensor B Circuit Low
U0098 Rover 60 Ignition Coil C Primary Circuit Malfunction
U0098 Austin A110 Autolamp Delay Decrease Circuit Failure
U0098 Kia Rio Ii Secondary Air Injection System Relay A circuit Malfunction
U0098 Tatra T700 Mirror Switch Invalid Code
U0098 Chrysler Phaeton Evaporative Vac Solenoid Circuit Malfunction
U0098 Goggomobil Royal Passenger Door Ajar Circuit Failure