U102C Diagnostic Trouble Code

U102C 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 U102C diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
Hesitation upon acceleration

Possible Causes :

A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
Dirty air cleaner element Damaged DPF
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code U102C 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 U102C.

Fortunately, U102C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U102C Trouble Code For Specific Cars

U102C Great Wall Peri Passenger Seat Occupant Detection Circuit Open
U102C Abarth 700 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
U102C Morris 1800 Brake Pedal Input Circuit Failure
U102C Volkswagen 411 Rear Sounder Circuit Failure
U102C Kieft V8 Servo Motor Potentiometer Airintake Left Circuit Short To Battery
U102C Alvis Fwd Air Bypass System
U102C Guy V8 Passenger Side Airbag Fault