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U1166 Engine Trouble Code

U1166 Engine

When you check engine light came on code U1166 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the U1166 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

When your car's 'U1166 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

U1166 Code Meaning :

U 1 1 6 6
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Engine Oil Temperature Sensor Malfunction Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector) Reverse Input Circuit

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

U1166 OBD-II Diagnostic Network (U) Trouble Code Description

U1166 engine trouble code is about Reverse Input Circuit.

Reason For U1166 Code

The reason of U1166 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

U1166 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.