Output Shaft Speed Sensor Circuit High

Common symptoms

What you'll notice

• Check and replace any damaged or loose wiring connections related to the output shaft speed sensor circuit.
• Inspect and replace the output shaft speed sensor if it is faulty or malfunctioning.
• Verify and repair any issues with the transmission control module (TCM) that may be causing the high circuit signal.
• Ensure proper ground connections for the output shaft speed sensor circuit are established and functioning correctly.
• If all other solutions fail, consider replacing the entire transmission for a more comprehensive fix.

Common causes

Most likely first

1. Faulty output shaft speed sensor
2. Loose or damaged wiring connections to the output shaft speed sensor
3. Malfunctioning engine control module (ECM) or transmission control module (TCM)
4. Faulty transmission shift solenoid
5. Transmission fluid level is low or contaminated

How to diagnose & fix

Work through it in order

1. Erratic shifting or shifting problems
2. Harsh or delayed shifting
3. Loss of power or poor acceleration
4. Check Engine Light illuminated
5. Speedometer not working or inaccurate speed reading