Saab 9-4X P0316: Engine Misfire → At Startup

A relatively common, yet difficult to diagnose OBD-II trouble code is P0316. It has the same meaning for the Saab 9-4X as it would any other vehicle.  It indicates that there is a misfire at the startup of the vehicle, and that it happens within the first 1000 revolutions of the engine. P0316: Engine Misfire … Read more

Saab 9-4X P0740: Torque Converter Clutch Circuit Malfunction

P0740 is one of the most common transmission trouble codes. It means that the 9-4X‘s computer has detected that there is an issue with the torque converter clutch (TCC) solenoid circuit.     P0740: Torque Converter Clutch Circuit Malfunction   The TCC “locks” the drivetrain, which allows for a true mechanical connection between the transmission … Read more

Saab 9-4X P0160: O2 Sensor → No Activity Detected B2S2

  P0160 is a standard OBDII trouble code. It has the same meaning for any vehicle with OBDII, including the Saab 9-4X. When a vehicle has P0160, the PCM/ECM is not detecting any activity from the sensor.  It doesn’t mean that the O2 sensor isn’t getting power, but that the voltage isn’t changing, which is … Read more

Saab 9-4X P0410: Secondary Air Injection System → Malfunction

P0410 is a generic OBDII trouble code.  This means that it has the same meaning for the Saab 9-4X as it would any other vehicle.  It is letting you know that there is an issue with the secondary air injection system. P0410: Secondary Air Injection System → Malfunction  The secondary air injection system injects air … Read more

Saab 9-4X P0506: Idle Air Control – RPM Lower than Expected

  P0506 is a common OBDII trouble code. It is typically triggered when the engine idle speed is lower than the predetermined limit set by the manufacturer. It is a generic code, which means that it has the same meaning for the Saab 9-4X as it would any other vehicle.    P0506 Symptoms:  9-4X Most … Read more

Saab 9-4X P0505: Idle Air Control System- Malfunction

P0505 is an OBDII code that deals with the idle air control system in the Saab 9-4X.  It’s a generic code, which means that it has the same meaning for the 9-4X as it would any other vehicle (9-4X or not). P0505:  Idle Air Control System:  Malfunction When P0505 is triggered, it is typically caused … Read more

Saab 9-4X P0158: Oxygen Sensor High Voltage (Bank 2 -Sensor 2)

  P0158 is an OBDII code that occurs in many vehicles, including the Saab 9-4X. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself There are also some less likely problems … Read more

Saab 9-4X P0157: Oxygen Sensor Low Voltage (Bank 2 -Sensor 2)

P0157 is a common OBDII code that occurs in the Saab 9-4X, it’s a general code (this means that it has the same meaning for any vehicle). This code typically indicates that there is an issue with the wiring or harness going to the sensor, or the sensor itself is bad.  There are other things that … Read more