P1490 Engine Code Repair
Meaning of P1490 engine trouble code is a kind of powertrain trouble code and when your car's 'P1490 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.
P1490 Fault Symptoms :
- Check engine light comes on
- Engine stalling or misfiring
- Engine performance issues
- Car not starting
If one of these reasons for P1490 code is occuring now you should check P1490 repair processes.
Now don't ask yourself; What should you do with P1490 code ?
The solution is here :
P1490 Possible Solution:
Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.
P1490 Code Meaning :
P
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine
1
Fuel And Air Metering
4
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
9
Ignition/Distributor Engine Speed Input Circuit Malfunction
0
Reverse Input Circuit
The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions.
P1490 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1490 OBD-II Trouble Code Vacuum Cut Valve Bypass Valve is one of the definitions for the P1490; however your vehicles manufacturer may have a different definition for the P1490 code. Please check below for your specific make. P1490 code.Main reason For P1490 CodeThe reason of P1490 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent. |
Parts or components should not be replaced with reference to only a P1490 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.