DTC Jeep U1966-83 Short Explanation
Channel: Maxidot Jeep
Date: 13/08/2020

The video focuses on the basic Jeep specific diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
Jeep
Code:
U1966 83
Definition:
Knock Sensor 4 Circuit High Input
Description:
Engine started,battery voltage at least 11.5v,all electrical components off,ground connections between engine and chassis well connected,and the ECM detected the Knock Sensor signal was too high or not recognized by the ECM
Cause:
Knock sensor circuit is openKnock sensor is loose (tighten to 20 NM)Contact between the knock sensor and cylinder block is dirty,corroded or greasyKnock sensor circuit is shorted to ground,or shorted to powerKnock sensor is damaged or
Failure Type:
Value of Signal Protection Calculation Incorrect
This sub type is used by the control module to indicate, that a message was processed with an incorrect protection (checksum) calculation.