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 MANUALSCHEVROLET2006RV CUTAWAY 6.6 2REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - 6.6L (LLY) - DTC P0016 TO DTC P0342DTC P0168CIRCUIT/SYSTEM TESTING
2006 Chevrolet RV Cutaway 6.6 2
Circuit/System Testing
2006 Chevrolet RV Cutaway 6.6 2SECTION Circuit/System Testing
IMPORTANT:
Fuel temperature overheating may be cause by a fuel heater element that is stuck on. Refer to Fuel Heater Always On
.
- With ignition ON and the engine OFF, observe the Fuel Temperature and ECT Temperature parameters with a scan tool.
- If the temperatures do not closely match each other when the engine has cold soaked overnight, test for a skewed fuel temperature sensor. Refer to Component Testing in the diagnostic.
- Inspect for debris or damage to the cooling fins of the fuel cooler.
- If a damaged fuel cooler was found, repair or replace the cooler.
RENDER: 1.0x
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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.