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DF312 Engine Trouble Code

Meaning of DF312 engine trouble code is : DF312 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.

DF312 Possible Solution:

DF312 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.

DF312 Code Meaning :

D f 3 1 2
For Engine Throttle/Pedal Position Sensor/Switch A Circuit Intermittent Engine Shutoff Solenoid Malfunction Glow Plug/Heater Circuit 'A' Malfunction

Regarding the DF312 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.

DF312 Description

DF312 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.

Reason For DF312 Code

The reason of DF312 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

DF312 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.