P1681 Isuzu Control Module Not Programmed

P1681 Isuzu Control Module Not Programmed

Possible causes
– Fualty ECM
– Wrong ECM for vehicle
– Service program error
What about the obd code?
Engine Control Module (ECM) program does not recognize the vehicles id, or the id is missing in the ECM.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1681 Isuzu Description

This diagnostic trouble code (DTC) indicates a programming error within the control module.

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