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.
Inspection Procedure
- CHECK OTHER DTC OUTPUT (BESIDES DTC C2315)
- Connect the hand-held tester to the DLC3.
- Turn the power switch on (IG).
- Turn the hand-held tester on.
- Read the DTCs.
Result:
| Display (DTC output) | Proceed to |
|---|---|
| No output | A |
| P0851-579, P0852-580, P3102-597, 598, and 599 | B |
HINT:
- DTCs P0851 and P0852 indicate P position switch malfunctions: DTC P0851-579 indicates "short to ground" and P0852-580 indicates "open" or "short to +B".
- DTC P3102 indicates a P position signal error: DTC P3102-597 indicates "short to ground", P3102-598 indicates "short to +B", and P3102-599 indicates "duty ratio error".
B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE (SEE DTC P0851/579 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW, DTC P0852/580 PARK/NEUTRAL SWITCH INPUT CIRCUIT HIGH , CIRCUIT DESCRIPTION )
A
REPLACE HYBRID VEHICLE CONTROL ECU (SEE HYBRID VEHICLE CONTROL ECU )
NO RELATED
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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.