7721h
CLAAS 7721h: Turbocharger Speed Non Valid
Issue description
The turbocharger speed signal is not valid, but the engine operates normally without using the faulty sensor information.
Check the cause
Turbocharger speed sensor
Wiring to the turbocharger speed sensor
Connection to the controller
Repair steps
Inspect
Inspect the turbocharger speed sensor for damage or loose connections.
Test
Test the wiring and connections between the turbocharger speed sensor and the controller.
Verify
Verify the integrity of the signal from the turbocharger speed sensor using diagnostic tools.
Parts you might need
(0)Get help to fix this fault by requesting a quote