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 MANUALSISUZU2006ASCENDER S, 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 236 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.2L - DTC P0135 TO DTC P0420)
2006 Isuzu Ascender S, 4.2 S, 4WD
Section 236 (Engine Control System & Fuel System - 4.2L - DTC P0135 To DTC P0420)
2006 Isuzu Ascender S, 4.2 S, 4WDSECTION Section 236 (Engine Control System & Fuel System - 4.2L - DTC P0135 To DTC P0420)
WARNING: This page is about a different car, the 2007 Isuzu Ascender, 2007 GMC Envoy, 2007 Chevrolet TrailBlazer, and 2007 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P0135 or P0141
- DTC P0137
- DTC P0138
- DTC P0140
- DTC P0171
- DTC P0172
- DTC P0201, P0202, P0203, P0204, P0205 or P0206
- DTC P0220
- DTC P0222
- DTC P0223
- DTC P0230
- DTC P0300-P0306
- DTC P0315
- DTC P0325
- DTC P0326
- DTC P0327 or P0332
- DTC P0335
- DTC P0336
- DTC P0351-P0356
- DTC P0365
- DTC P0366
- DTC P0411
- DTC Descriptor
- 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 MIL/DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Procedures
- Repair Verification
- DTC P0412
- 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 MIL/DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Procedures
- Repair Verification
- DTC P0418
- 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 MIL/DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Procedures
- Repair Verification
- DTC P0420
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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.