Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSAAB20049-5 LINEAR (9600) L4-2.3L TURBO (2.3T)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSFUEL TANK PRESSURE SENSORDESCRIPTION AND OPERATION
2004 Saab 9-5 Linear (9600) L4-2.3L Turbo (2.3t)
Fuel Tank Pressure Sensor: Description and Operation
2004 Saab 9-5 Linear (9600) L4-2.3L Turbo (2.3t)SECTION Description and Operation
EVAP Pressure Sensor (585)
A differential pressure sensor is fitted on the tank. The pressure sensor compares the pressure in the tank with the barometric pressure.
The pressure sensor is powered with 5V from Trionic pin 46 and is grounded on pin 70.
The pressure sensor delivers a voltage to Trionic pin 59, the magnitude of which is proportional to the difference between the pressure in the tank and the barometric pressure.
When there is no difference, the voltage from the pressure sensor is approx. 2.5V.
The pressure sensor is used during the OBD II diagnosis. (Does not apply to ORVR without tank integrity diagnosis as this variant does not have a tank pressure sensor)
Diagnostics
If the sensor voltage is too low, diagnostic trouble code P0452 will be generated.
If the sensor voltage is too high, diagnostic trouble code P0453 will be generated.
If the pressure value is implausible, diagnostic trouble codes P1451, P1452, P1453 will be generated.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.