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U0122 Engine Trouble Code

Meaning of U0122 engine trouble code is a kind of network trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

U0122 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for U0122 code is occuring now you should check U0122 repair processes.
Now don't ask yourself; What should you do with U0122 code ?
The solution is here :

U0122 Possible Solution:

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.

U0122 Code Meaning :

U	0	1	2	2
OBD-II Diagnostic Network (U) Trouble Code For Engine	Intake Valve Control Solenoid Circuit Low	Fuel Rail/System Pressure - Too High	Turbocharger Boost Sensor A Circuit Low	Glow Plug/Heater Circuit 'A' Malfunction

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.

U0122 OBD-II Diagnostic Network (U) Trouble Code Description

U0122 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.

Main reason For U0122 Code

The reason of U0122 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

U0122 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.

	Example: 0140