U1005 Diagnostic Trouble Code

U1005 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 U1005 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
Rich or lean exhaust

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.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code U1005 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 U1005.

Fortunately, U1005 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1005 Trouble Code For Specific Cars

U1005 Mg Mgb Air Suspension Vent Solenoid Output Circuit Open
U1005 Lamborghini Countach Shift Time Error
U1005 Paykan Saloon Driver's / Passenger's Door Ajar Output Circuit Failure
U1005 Subaru Outback LF LAMP HIGH BEAM CIRCUIT Short to Battery
U1005 Abarth Monomille A/C Demand Out of Self Test Range
U1005 Mitsubishi Carisma Audio Phone is Not Responding
U1005 Honda Cr-v Pressure Control Solenoid Performance or Stuck Off