Powertrain, generic · Hybrid propulsion

P0D29 Battery Charger Input Current Too Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D29 is set when the on-board charger draws less AC current than expected for the power it was asked to deliver, while voltage and charging permission are present. No manufacturer documents P0D29 publicly. Related tests show how such a check is built: GM's Volt compares the AC input current with fixed limits for the high side (P0D2A), and Mitsubishi first verifies that the input current sensor reads plausibly before trusting it (P0D39). A low current with normal voltage points to a charger that does not ramp up, high resistance at the inlet or cable, an EVSE that limits current, or a measurement fault. CARB requires charger faults that limit the charging rate to be detected. Charging is slower than usual or stops. Too much current is P0D2A, voltage problems P0D27/P0D28.

Likely causes

Charger power stage not ramping up
High resistance at the charge inlet, cable or plug contacts
Input current sensor reading too low
Charging station or cable limiting current more than signalled

Symptoms

  • AC charging much slower than usual
  • Charging stops or charging system warning

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–2,000
Time0.3–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

battery chargerac input circuit

Related codes

P0D2AP0D3AP0D39P0D27

References: law.cornell.edu, gsi.ext.gm.com, mitsubishitechinfo.com.