U0491 Engine Trouble Code
Meaning of U0491 engine trouble code is a kind of network trouble code and U0491 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,200. Taking your car into a shop will cost you around $210 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.
U0491 Fault Symptoms :
If one of these reasons for U0491 code is occuring now you should check U0491 repair processes.
Now don't ask yourself; What should you do with U0491 code ?
The solution is here :
U0491 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.
U0491 Code Meaning :
|OBD-II Diagnostic Network (U) Trouble Code For Engine||Intake Valve Control Solenoid Circuit Low||O2 Sensor Heater Circuit Malfunction||Crankshaft Position Sensor A Circuit Malfunction||Crankshaft Position Sensor A Circuit Low Input|
Regarding the U0491 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.
U0491 OBD-II Diagnostic Network (U) Trouble Code DescriptionU0491 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.
Main reason For U0491 CodeThe reason of U0491 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.
U0491 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.