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 MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (ENGINE CONTROL SYSTEM - 2.4L - DTC P0010 TO DTC P0341)DTC P0171 OR P0172CIRCUIT/SYSTEM TESTING FOR DTC P0172
2006 Pontiac G6 GTP, 2D Coupe, Standard
Circuit/System Testing For DTC P0172
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Circuit/System Testing For DTC P0172
WARNING: This page is about a different variant/trim than selected.
- Allow the engine to reach operating temperature. With the engine running, observe the affected Long Term FT parameter with a scan tool. The value should be more than -20 percent with the engine running at operating temperature.
- If the value is not more than -20 percent, inspect for the following:
- With the engine idling and the transmission in the Park or Neutral position, observe the manifold absolute pressure (MAP) sensor parameter. The MAP sensor parameter should be between 19-42 kPa.
- If the MAP sensor parameter is not between 19-42 kPa, refer to DTC P0106 .
- Vacuum hoses for splits, kinks and proper connections
- The air intake duct for being collapsed or restricted
- The air filter for being dirty or restricted
- Objects blocking the throttle body
- Excessive fuel in the crankcase
- The evaporative emissions control system for proper operation
- Excessive fuel pressure
- Properly functioning fuel injectors
- Fuel contamination
- The HO2S for proper installation and for electrical wires or connectors that may have contacted the exhaust system
- The HO2S signal circuit shorted to voltage
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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.