U1162 Diagnostic Trouble Code

U1162 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 U1162 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
Malfunction Indicator Lamp (MIL) illuminated

Possible Causes :

A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Some aftermarket accessories and performance modifications
Dirty air cleaner element Damaged DPF

Repair Processes :

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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code U1162 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 U1162.

Fortunately, U1162 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1162 Trouble Code For Specific Cars

U1162 Panther Six Driver Sid, Side mount Airbag Low resistance on Squib
U1162 Studebaker Golden Hawk Lamp Turn Signal Right Circuit Open
U1162 Mercury Mariner Air Suspension LR Height Sensor Circuit Short To Ground
U1162 Nsu Ro80 Cylinder 12 Contribution/Balance Fault
U1162 Fiat Ritmo Lateral Accelerometer circuit Failure
U1162 Lincoln Aviator Throttle Position (TP) Sensor Circuit Intermittent Low Voltage
U1162 Mercedes E 230 ABS Power Relay Coil Short Circuit To Battery