Saab 9-4X P0021: OBDII Code Diagnosis

P0021 is a common trouble code. It affects vehicles with variable valve timing (VVT). The list of VVT vehicles is growing, and the Saab 9-4X 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

Saab 9-4X P0305: Misfire Detected (Cylinder 5)

P0305 is a fairly common trouble code with the Saab 9-4X. It’s and OBD2 code and stands for: P0305 is certainly a cause for concern, and should be considered a threat to the drivability your 9-4X. The nice thing about P0305 is that it’s a cylinder specific trouble code, which makes diagnosing the problems simpler … Read more

Saab 9-4X P0456: EVAP System – Small Leak

One of the most common trouble codes with the Saab 9-4X is the P0456 code. This trouble code references a number that is given to you when you plug your 9-4X into a OBDII scanner. P0456 Indicates that there is a small leak in the evaporative emission control system. It often appears with, or is … Read more

Saab 9-4X P0741 OBDII Transmission Code Diagnosis

P0741 is a very common OBDII trouble code. It’s know to affect the Saab 9-4X quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The 9-4X uses a clutch in the torque converter to lock the engine and transmission together at highway speed. P0741 can register whenever this … Read more

Saab 9-4X P0172: Fuel System Rich – Bank 1

A common trouble code with the Saab 9-4X is P0172. This code number references a number that is given to you when you plug your car into a OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common. It means that the motor is running … Read more

Saab 9-4X P0171 OBDII Trouble Code Diagnosis

One of the most common trouble codes with the Saab 9-4X is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common.   P0171: … Read more

Saab 9-4X P0141 Diagnosis

P0141 is a very common OBDII code that occurs in the Saab 9-4X. It is caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 1 sensor 2, which is downstream from the catalytic converter. It technically stands for: The purpose of the heated element in the oxygen sensor … Read more

Saab 9-4X P0128: Coolant Thermostat – Below Temp

P0128 is a relatively common OBDII trouble code. It is triggered when your Saab 9-4X‘s coolant temperature fails to reach the proper operating temperature. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+).   9-4X P0128 Symptoms There aren’t many symptoms with P0128, unless … Read more