P0641 SAAB Possible Causes
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection
- Shorted sensor on 5 volt circuit
First diagnose P0641 SAAB code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P0641 SAAB code
Labor: 1.0The cost of diagnosing the P0641 SAAB code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the P0641 SAAB code detected?The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower than expected
P0641 SAAB Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0641 SAAB MeaningThe control module has 2 internal 5-volt reference buses called 5-volt reference 1 and 5-volt reference 2 . Each reference bus provided 5-volt reference circuit for more than one sensor. Therefore, a fault condition on one 5-volt reference circuit will affect the other 5-volt reference circuits connected to the reference bus. The control module monitors the voltage on the 5-volt reference buses.
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