Powertrain, generic · Hybrid propulsion

P0D43 Battery Charger 14 Volt Output Voltage Sensor Circuit Range/Performance

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D43 says the voltage reported for the charger's 14 V output does not fit other measurements of the low-voltage system. GM's battery charger control module in the 2011-2014 Volt and the ELR compares the reading with the run/crank signal voltage and with the voltage of a further enable line (HVEMB); a difference of 6 V or more for 4 of 5 s stores a Type A fault with MIL. The test is suspended while the out-of-range codes P0D44/P0D45 or a reference voltage fault are present. In GM's design this output is a low-voltage DC stage inside the charger, separate from the Volt's accessory power module. A failing sense circuit in the charger is most likely, a poor ground or 12 V feed less so; charging can be affected.

Likely causes

Low-voltage sense circuit inside the charger reads wrong
Poor ground or 12 V feed at the charger skews the comparison
Charger module software

Symptoms

  • MIL on (GM)
  • Charging interrupted or not completed

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€50–2,500
Time0.5–4 h

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

Parts involved

battery charger 14v output voltage sensoron board charger

Related codes

P0D42P0D44P0D45P0D46P0D5B

References: gsi.ext.gm.com, gsi.ext.gm.com.