P154B Diagnostic Trouble Code Discussion for April 2020
Intake Air (IA) Heater Signal Circuit Malfunction
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| Help Request | Posted | |
| 2008 GMC Sierra 3500 HD SLE 6.6L Stall VIN: 1GDJK34668 P154B: Intake air heater circuit. ... plugged. Customer had EGR deleted (not by us). Intake air heater disconnected and P154B code when vehicle was purchased. We tested and found intake air heater faulty (part 2 weeks away). Vehicle still stalling after EG... |
April 29, 2020 |
