Powertrain
Definition only
Lights the check engine lamp
P2D84: Battery Charger B Input Current Sensor Circuit High
Standardized SAE J2012 code · P2Dxx codes
What does P2D84 mean?
The input current sensor of battery charger B reports a circuit high condition. Charging current measurement is unreliable.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
- High Signal wire shorted to B+
- Medium Current sensor offset drifted high
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2D84 on the same make and model first.
P2D84 in the community
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