Unexpected response from the engine
â–¶ How to fix
Check the fault codes in the engine management system. Check exhaust brake including its connector and cable harness.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The engine speed does not fall quickly enough even though OPC has requested the exhaust brake from the engine control system during gear changing.
Possible cause
Components or cable harnesses may be defective or have a loose connection.