Exhaust Brake Input Circuit High

Common symptoms

What you'll notice

• Check the wiring and connections for any damage or loose connections related to the exhaust brake input circuit.
• Inspect the exhaust brake sensor for any signs of malfunction or damage and replace if necessary.
• Reset the check engine light and monitor the vehicle to see if the error code reappears, as it could be a temporary glitch.
• Update the vehicle's software or perform a software reset to ensure the exhaust brake input circuit is functioning correctly.
• If all else fails, consult the vehicle's manual or reach out to the manufacturer for further guidance on troubleshooting and resolving the exhaust brake input circuit high issue.

Common causes

Most likely first

1. Faulty exhaust brake sensor
2. Short circuit in the exhaust brake wiring
3. Faulty exhaust brake switch
4. Malfunctioning engine control module (ECM)
5. Defective exhaust brake solenoid

How to diagnose & fix

Work through it in order

1. Engine power loss
2. Illuminated check engine light
3. Decreased fuel efficiency
4. Difficulties with acceleration or deceleration
5. Increased exhaust emissions