DTC GMC P1508 Short Explanation
Channel: Maxidot GMC
Date: 20/06/2020

The video focuses on the basic GMC-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:
GMC
Code:
P1508
Definition:
Idle Speed Low - IAC System Not Responding
Description:
DTC P0107, P0108, P0117, P0118, P0121, P0122, P0123 and P0500 not set,engine started,vehicle not moving,ECT sensor more than 122ºF,IAT sensor more than -13ºF,system voltage over 10.0v,engine runtime over 30 seconds,BARO sensor over 70 kPa,MAF sens
Cause:
Base engine problem causing a slow or unstable idle speedFuel system is too rich or too leanIAC motor is damaged or has failed (it may be sticking)Throttle body plate or bore contaminated with foreign materialThrottle body adjustment screw tampere