P0823
PowertrainTransmissionmoderate severityGear Lever X-Position Circuit
What P0823 Means
The transmission control module has detected a problem in the gear selector X-axis position sensor circuit. This affects the system's ability to read which gear the driver has selected.
Symptoms
- Erratic or no gear selection
- Transmission warning light on
- Vehicle may not shift properly
Common Causes
- Faulty gear lever position sensor
- Damaged or corroded wiring/connector
- Poor electrical connection at sensor
- Faulty transmission control module
Diagnostic Steps
- Scan for stored codes and freeze frame data
- Inspect gear lever sensor wiring and connectors
- Measure sensor signal voltage across shift range
- Replace faulty sensor or repair wiring as needed
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ANCEL AD410 →
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Serious DIY~$100
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✓ Autel official store
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