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 MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 147 (ENGINE CONTROL SYSTEM - 3.8L - DTC P0016 TO DTC P0206)DTC P0140CONDITIONS FOR RUNNING THE DTCNOTES
2006 Buick Terraza CXL, 3.5 L, AWD
Conditions for Running the DTC: Notes
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Notes
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The following conditions must be met:
- DTCs P0036, P0054, P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0125 (where applicable), P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0442, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0464, P0496, P2135 are not set.
- DTCs P2A01, P0401 and P0420 are not commanding fuel.
- The system voltage is between 9-18 volts.
- The scan tool special functions are not active.
This vehicle has 2 methods to enable and run this diagnostic, called regular test and fast pass test.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.