Engine Overspeed, Value to high
If the DTC seems to be caused by shifting down to a wrong gear, erase the DTC. If not: Check for fuel or oil leakages into the air intake system. Check for injector leakage and oil leakage into the cylinders.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Engine speed has been higher than 3000 rpm. This test is performed if engine is running and both engine speed sensors receives detects correct pulse pattern.
This error might occur when shifting down to a wrong gear. The engine is not designed for these high speeds. The fault might also depend on an oil or fuel leakage (for example in the compressor or in some injector) into the intake air system or into the cylinders which makes the engine uncontrollable.