P1643 Opel Engine Speed Output Circuit
Possible causes
– Reprogram computer – Faulty ECM
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1643 Opel Description
There is a communication problem with Control Area Network (CAN) link from the Engine Control Module (ECM)to the Transmission Control Module (TCM)
Opel Vehicle:Opel Meriva,Opel Astra,Opel Corsa,Opel Zafira,Opel Omega,Opel Calibra,Opel Vectra