Saab 900 P0621 Engine Error Code

When you check Saab 900 car engine light came on code P0621 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Saab manufacturer may have a different definition for the P0621 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

Do you have fresh, clean fuel in the tank? If it's empty, fill it up and go! If it's full, check P0621 Saab 900 that the fuel shut-off valve is open and that it is clean. Stale fuel, dirt and debris are the most common cause of outdoor power equipment not starting properly. If you store equipment with untreated gas in the tank, it can lead to engine damage.

Saab 900 P0621 OBD-II Diagnostic Powertrain (P) Trouble Code Description Saab 900 car P0621 OBD-II Trouble Code The Engine Control Module (ECM) uses the generator turn on signal circuit to control the generator. A high side driver within the ECM allows the ECM to turn the generator ON and OFF. When Generator op Reason For Saab 900 P0621 Code The reason of Saab 900 P0621 OBD-II Engine Error Code is P0621 Generator Lamp L Control Circuit Malfunction.

If your vehicle failed a P0621 Saab 900 test and the Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look P0621 Saab 900: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

Saab 900 P0621 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.

What does fault code P0621 mean for Saab 900 ? What does a diagnostic reading P0621 mean for Saab 900 ? How to fix OBD2 Code P0621 for Saab 900 ? What do we know about P0621 code for Saab 900 ?