DTC Pontiac P1664 Short Explanation
Channel: Maxidot
Date: 2021-01-08

The video focuses on the basic Pontiac 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:
Pontiac
Code:
P1664
Definition:
Skip Shift 1-4 Upshift Lamp Control Circuit Malfunction
Description:
Engine started,engine speed over 600 rpm,and the PCM detected the Actual state and the Commanded state of the Skip Shift Lamp control circuit did not match during the CCM test.
Cause:
Skip shift lamp control circuit is open,shorted to ground or to system power (B+)Skip shift lamp power circuit is open (check the GAGES fuse)Skip shift lamp (bulb) is open or missing (check in the IPC)PCM has failed