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, 5.3 M, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 376 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DIAGNOSTIC INFORMATION & PROCEDURESDIAGNOSTIC CODE INDEX
2006 Isuzu Ascender S, 5.3 M, 4WD
Diagnostic Code Index
2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1390 | B1390: Device Voltage Reference Input 1 Circuit |
| DTC B1487 | B1487: Generator L-Terminal Circuit Low |
| DTC B1488 | B1488: Generator L-Terminal Circuit High |
| DTC B1492 | B1492: Generator F-Terminal Circuit Low |
| DTC B1516 | B1516: Battery Current Sensor Performance |
| DTC B1566 | B1566: Current Sensor Polarity Check |
| DTC P0562 | P0562: System Voltage Low - ECM |
| DTC P0563 | P0563: System Voltage High |
| DTC P0621 | P0621: Generator L-Terminal Circuit |
| DTC P0622 | P0622: Generator F-Terminal Circuit |
| DTC P1668 | P1668: Generator L-Terminal Control Circuit |
RENDER: 1.0x
NO RELATED
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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.