P0641 Ford

Ford P0641 OBD-II Trouble Code Definition:

P0641 5 Volt Reference Voltage Incorrect

P0641 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0641
Sensor Reference Voltage “A” Circuit/Open
What does the code mean? OBD-ii Code P0641 definition:
The Service Manual says The Engine Control Module (ECM) detects a voltage out of tolerance condition on the 5V reference 1 or 2 bus for more than 0.5 seconds.
Symptoms Sumptoms of OBD code P0641
– Engine Light ON (or Service Engine Soon Warning Light)
Causes Causes of the OBD-II code P0641
– ECM Short circuit condition – Shorted sensor on 5 volt circuit – Failed ECM The Error code is generally activated on detection of the following conditions: The ECM has detected the sensor 5 volt reference circuit voltage is higher or lower than expected