U20EE Diagnostic Trouble Code

U20EE 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 U20EE diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
Poor acceleration

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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code U20EE 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 U20EE.

Fortunately, U20EE is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U20EE Trouble Code For Specific Cars

U20EE Metropolitan 1200 Air Suspension RF Height Sensor Circuit Short To Battery
U20EE Volkswagen 1200 RCNT Solenoid Circuit Malfunction
U20EE Holden Te Power Window Master Circuit Failure
U20EE Citroen 7 Hp Flash To Pass Switch Circuit Open
U20EE Armstrong Siddeley 20 Air Suspension LR Height Sensor Circuit Short To Ground
U20EE Bizzarrini Gt Brake Switch Malfunction
U20EE Subaru Leone Left Rear Turn Lamp Circuit Short to Battery