Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 158 (ENGINE CONTROLS - SELF-DIAGNOSTICS)DIAGNOSTIC TESTSDTC P0105: MAP SENSOR CIRCUIT RANGE/PERFORMANCEDTC PARAMETERS
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
DTC Parameters
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION DTC Parameters
WARNING: This page is about a different car, the 2002 Saturn LW200, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
- Engine speed between 600-6375 RPM.
- RPM change less than 50 RPM.
- Engine run time more than 40 seconds.
- TCC change less than 1.3 percent (A/T).
- IAC change less than 5 counts.
- Throttle angle change is less than 2 percent.
- No CMP, CKP, ECT, EVAP leak, fuel injector, fuel tank pressure, fuel trim, idle speed, MAP, misfire, HO2S1, TP, P0446, P0502, or P1441 DTCs are set.
DTC sets when MAP sensor voltage or TP sensor voltage is out of range for more than 14 seconds.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.