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.
DTC C1C20-62
DTC C1C20-62 : Neutral Sensor Failure
NOTE: Before you troubleshoot, review the general troubleshooting information .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| C1C20-62 Neutral Sensor Failure |
DTCs (VSA)
- DTC check
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Test-drive the vehicle at 19 mph (30 km/h) or more for 60 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.
-5. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame U0029-00 CAN Communication Failure (Bus OFF) U0100-00 CAN Communication Failure with ECM/ISU C1C20-62 Neutral Sensor Failure Is DTC C1C20-62 indicated?
YES
If DTC C1C20-62 is only indicated, go to step 2.
YES
If DTC U0029-00 or U0100-00 are also indicated, go to U0029-00 or U0100-00 .
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting . If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
- PGM-FI system parameter check
-1. Check the parameter(s) below with the HDS.
Signal Current conditions Values Unit Status of Neutral Position Does the parameter changes when the shift lever is in neutral, and then shift lever is not in neutral?
YES
Go to step 3.
NO
- VSA modulator-control unit check
-1. Check the parameter(s) below with the HDS.
Signal Current conditions Values Unit NEUTRAL SWITCH STATUS Does the parameter changes when the shift lever is in neutral, and then shift lever is not in neutral?
YES
The system is OK at this time. Refer to intermittent failures troubleshooting.
NO
Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .
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.