What does code P1640 mean on Isuzu vehicles?
The ECU detects a high voltage condition on the ODM1 input circuit (except 1998 models).
OBD-II Code Isuzu
P1640 — Isuzu — ODM1 Input Voltage High
The ECU detects a high voltage condition on the ODM1 input circuit (except 1998 models).
Common symptoms
- Check engine light on
Possible causes
- Wiring short to voltage
Initial recommendation
Inspect ODM1 input circuit wiring and connectors.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Isuzu code P1640 with your vehicle's actual symptoms for more complete diagnostic guidance.
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