P1900
Output Shaft Speed Circuit Intermittent Malfunction
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Incorrect gear shifting
- Hard shifts
- Enabling emergency transmission mode
- Check Engine Light Flashing
- Reduced vehicle dynamics
Causes
- Damage to sensor wiring or connectors
- Output shaft speed sensor malfunction
- Circuit Grounding Problems
- Malfunction of the transmission control unit
- Mechanical damage to the output shaft
How to Fix
- Check the integrity of the sensor wiring and connectors
- Test the output shaft speed sensor
- Check resistance and voltage in the circuit
- Replace sensor if necessary
- Reset error codes after repair