U0115 Diagnostic Trouble Code

U0115 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 U0115 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Dirty air cleaner element Damaged DPF

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. 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.

Process Tips

Diagnostic trouble code U0115 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 U0115.

Fortunately, U0115 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0115 Trouble Code For Specific Cars

U0115 Belsize 9 Hp Barometer Pressure Circuit Malfunction
U0115 Bugatti Type 38 Cylinder 10 Injector Circuit High
U0115 Buick Centurion Cylinder 6 Injector Circuit High
U0115 Hindustan Motors Ambassador PCM Processor Fault
U0115 Toyota Passo P/ES Circuit Out Of Self Test Range
U0115 Chrysler Sebring Exhaust Gas Recirculation Circuit Range/Performance
U0115 Gmc Sonoma Park Brake Switch # 1 Released Circuit Short to Gnd