P1778 Saab Auto Trouble Code
P1778 Saab OBD2 may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.
The computer notices the canister is empty when it detects a leaner condition (all the vapors are used up) and it resumes normal fuel delivery. Some car manufacturers then close the vent solenoid but leave the purge solenoid open. That creates a vacuum throughout the entire fuel storage system. Once the correct vacuum is reached, it closed the purge solenoid and waits to see if the vacuum holds.
P1778 Saab Possible Solution:
Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.
P1778 Saab Description For All Models :
- Saab 750
- Saab 9.3
- Saab 9.3 Ii
- Saab 9.5
- Saab 9.5 Ii
- Saab 90
- Saab 900
- Saab 9000
- Saab 9000i
- Saab 900i
- Saab 92
- Saab 9-2
- Saab 9-2x
- Saab 93
- Saab 9-3
- Saab 95
- Saab 9-5
- Saab 96
- Saab 9-7
- Saab 9-7x
- Saab 99
- Saab 9-x
- Saab Aero-x
- Saab Gt
- Saab Mc
- Saab Sonett
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P1778 Saab Trouble Repair :
The scent may P1778 Saab signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such, so if the inside of your car as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop. |
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