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.
Conditions For Setting DTC P1817
2000 Saturn LW2 AutomaticSECTION Conditions For Setting DTC P1817
DTC will set under the following conditions:
- PSA indicates Reverse when gear ratio is more than 2.23 or less than 2.02 for 5 seconds.
- DTCs P0121, P0122 or P0123 (throttle position sensor), P0716 or P0717 (input speed sensor) or P0502 and P0503 (vehicle speed sensor) are not present.
- DTCs P0751, P0753, P0756 or P0758 (1-2 and 2-3 shift solenoid) are not present.
- Engine torque is more than 10 ft. lbs ( 14 N.m).
- Throttle position angle is equal to or more than 10 percent.
- Vehicle speed is 5 MPH or more.
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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.