U0313 Diagnostic Trouble Code

U0313 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 U0313 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
Lack of power

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Some aftermarket accessories and performance modifications

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. 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 U0313 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 U0313.

Fortunately, U0313 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0313 Trouble Code For Specific Cars

U0313 Kia Spectra Sensor Power Supply Low Input
U0313 Toyota Lite-ace Oil Temperature Sensor Circuit Open
U0313 Sunbeam 12 MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER Aborted
U0313 Toyota Rsc Park Lamp Flash Relay Circuit Short to Battery
U0313 Chrysler 180 Engine Oil Pressure Sensor/Switch Low Voltage
U0313 Mahindra Armada Traction Control Valve LF Circuit Short To Ground
U0313 Mcc Silverpulse A/C Refrigerant Pressure Sensor Circuit Low Input