P0793
PowertrainTransmissionmoderate severityIntermediate Shaft Speed Sensor Circuit No Signal
What P0793 Means
No signal is being received from the intermediate shaft speed sensor. The transmission cannot properly determine shaft speed.
Symptoms
- No or delayed shifting
- Transmission stuck in limp mode
- Warning light illuminated
Common Causes
- Failed intermediate shaft speed sensor
- Open circuit in sensor wiring
- Corroded or disconnected connector
- Faulty transmission control module
Diagnostic Steps
- Scan for no-signal fault confirmation
- Check connector for power and ground
- Test wiring continuity to TCM
- Replace sensor if signal absent
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