U2667 Diagnostic Trouble Code

U2667 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 U2667 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs.

Process Tips

Diagnostic trouble code U2667 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 U2667.

Fortunately, U2667 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U2667 Trouble Code For Specific Cars

U2667 Volkswagen Gx3 Ride Control RR Shock Actuator Circuit Short To Ground
U2667 Mazda B2500 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground
U2667 Lancia Megagamma Split Air #2 Circuit Malfunction
U2667 Rover 45
U2667 Opel Zafira B Door Lock Cylinder Circuit Short To Battery
U2667 Moretti Coupe Blower (Fan) Circuit Failure
U2667 Bentley Arnage Battery Power Relay Circuit Short To Ground