This page is meant to help you troubleshoot the Saturn SL P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more
P0457 is a somewhat common trouble code with the Saturn SL. This code references a number that is given to you when you plug your SL into a OBDII scanner. P0457 Indicates that there is a leak in the Evaporative Emission Control (EVAP) System. It is similar to P0455 (large leak) and P0456 (small leak) … Read more
The check engine light indicates that you need to service a vehicle soon. If your Saturn SL has a flashing check engine light means that there is a catalyst damaging misfire (it can damage the catalytic converter and O2 sensors). If your car has a flashing check engine light, it means you need to service … Read more
P0132 is a common OBDII code that occurs in many vehicles, including the Saturn SL. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. The air fuel sensor stays in rich biased mode for too long. There are also some less likely problems that can cause … Read more
P0122 is a common trouble code with the Saturn SL. It’s an OBDII code that references issues with the Throttle Position Sensor (TPS). It is relatively serious problem since it can leave your vehicle stranded or severely limited. OBDII code P0122 is a serious problem that requires serious attention. Diagnosing it can be … Read more
The P0128 OBD II trouble code indicates that your Saturn SL’s engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the car. This code can appear as soon as you start your vehicle, or it can also occur while driving. It’s essential to address this issue … Read more
P0121 is a relatively common trouble code with the Saturn SL. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it can leave your vehicle in failsafe mode. OBDII code P0121 is a serious problem that requires serious attention. Diagnosing it can … Read more
P0021 is a common trouble code. It affects vehicles with variable valve timing (VVT). The list of VVT vehicles is growing, and the Saturn SL can have VVT, and is prone to developing this code. P0021 is a generic OBDII code. This means that it has the same definition regardless of the make … Read more
P0741 is a very common OBDII trouble code. It’s know to affect the Saturn SL quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The SL uses a clutch in the torque converter to lock the engine and transmission together at highway speed. P0741 can register whenever this … Read more
A trouble code is a signal that is generated by an automatic transmission system whenever it detects an issue in the Saturn SL that requires your attention. The P0700 code is a general code that is typically accompanied by another code that specifies the specific problem. This code is part of the OBDII system and … Read more