U20E0 Diagnostic Trouble Code

U20E0 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 U20E0 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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)
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. 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. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code U20E0 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 U20E0.

Fortunately, U20E0 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U20E0 Trouble Code For Specific Cars

U20E0 Italdesign Aztec
U20E0 Daihatsu Muse Glow Plug Circuit High Input (Bank #1)
U20E0 Oldsmobile Vista Cruiser Damper LR Circuit Open
U20E0 Lincoln Mkx Throttle/Pedal Position Sensor/Switch A Circuit High Input
U20E0 Mazda Sentia A/C Clutch Magnetic Control Circuit Failure
U20E0 Dodge Colt Ignition Coil D Primary/Secondary Circuit Malfunction
U20E0 Ac Six ABS Hydraulic Brake Switch Circuit Failure