B1391 Engine Code Repair
Meaning of B1391 engine trouble code is a kind of body trouble code and when your car's 'B1391 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.
B1391 Fault Symptoms :
- Check engine light comes on
- Engine stalling or misfiring
- Engine performance issues
- Car not starting
If one of these reasons for B1391 code is occuring now you should check B1391 repair processes.
Now don't ask yourself; What should you do with B1391 code ?
The solution is here :
B1391 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.
B1391 Code Meaning :
B
OBD-II Diagnostic Body (B) Trouble Code For Engine
1
Fuel And Air Metering
3
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
9
Ignition/Distributor Engine Speed Input Circuit Malfunction
1
Shift Solenoid E Performance or Stuck Off
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.
B1391 OBD-II Diagnostic Body (B) Trouble Code DescriptionB1391 engine trouble code is about Shift Solenoid E Performance or Stuck Off.Main reason For B1391 CodeThe reason of B1391 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input. |
Parts or components should not be replaced with reference to only a B1391 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.