P0D26
Battery Charger System Precharge Time Too Long
The battery charger system precharge time exceeds the calibrated maximum. Indicates high resistance, capacitor degradation, or weak contactor.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
Ordered by how often each turns out to be the cause.
- Increased resistance in precharge pathCommon
- Capacitor degradedPossible
Parts involved
- Battery Charger Precharge Circuit
- Dc Link Capacitor
P0D26 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.