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U1074 Engine Trouble Code

Meaning of U1074 engine trouble code is : U1074 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

U1074 Possible Solution:

U1074 Engine

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

U1074 Code Meaning :

U 1 0 7 4
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Cylinder 10 Contribution/balance Fault Timing Reference High Resolution Signal A Too Many Pulses

Regarding the U1074 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

U1074 OBD-II Diagnostic Network (U) Trouble Code Description

U1074 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Reason For U1074 Code

The reason of U1074 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

U1074 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.