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 MANUALSBUICK2006ALLURE CXSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 6 (ENGINE CONTROL SYSTEM - 3.8L - DTC P0451 TO DTC P2120)
2006 Buick Allure CXS
Section 6 (Engine Control System - 3.8L - DTC P0451 To DTC P2120)
2006 Buick Allure CXSSECTION Section 6 (Engine Control System - 3.8L - DTC P0451 To DTC P2120)
WARNING: This page is about a different variant/trim than selected.
- DTC P0451
- DTC P0452
- DTC P0453
- DTC P0454
- DTC P0455
- DTC P0496
- DTC P0506
- DTC P0507
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 or P2610
- DTC P0641 or P0651
- DTC P0650
- DTC P0685
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Diagnostic Aids
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Procedures
- DTC P1125
- DTC P1133
- DTC P1134
- DTC P1350
- DTC P1400
- DTC P1404
- DTC P1516
- DTC P1640, P1650 or P1660
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- Repair Verification
- DTC P2101
- DTC P2107
- DTC P2108
- DTC P2119
- DTC P2120
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.