P0D39: Battery Charger A Input Current Sensor Circuit Range/Performance

P0D39 flags an implausible reading from the sensor that measures alternating current at the input of charger A, the on-board charger. Both documented users test its zero point. GM's charger module in the 2011 Volt sets the code as a Type A fault with MIL when the current value sits 5.4 A or more away from zero for 512 of 640 ms although no current should flow; the 2016 ELR table uses 1.4 A. Mitsubishi's 2022 Outlander PHEV logs it when 1.5 A or more is seen for 2 s while the PHEV-ECU has not released charging, then stops charging and calls for a new charger/DC-DC unit. Hard electrical faults of the same sensor are P0D3A and P0D3B, the general circuit code is P0D38. The car still drives, but AC charging is blocked.

Symptoms

• AC charging does not start
• MIL on (GM)
• Charging fault shown at the charge port or in the cluster

Most likely causes

• Zero point of the current sensor inside the charger has drifted
• Measuring electronics of the on-board charger failed
• Charger calibration out of date

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the codes with a hybrid-compatible scanner and write down the freeze frame data
2. Compare the reading with other engine data while varying the engine speed.
3. Make sure the battery cooling air intake is clean
4. Check the 12 V auxiliary battery, which can also trigger warnings
5. Leave any high-voltage measurements to a specialized repair shop

What each character of P0D39 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• D: Subsystem depends on the code range
• 39: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0D39?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P0D39?

The most common causes are: zero point of the current sensor inside the charger has drifted; measuring electronics of the on-board charger failed; charger calibration out of date.

Related codes

• P0D38Battery Charger A Input Current Sensor Circuit
• P0D3ABattery Charger A Input Current Sensor Circuit Low
• P0D3BBattery Charger A Input Current Sensor Circuit High
• P0D3CBattery Charger A Input Current Sensor Circuit Intermittent/Erratic
• P0D29Battery Charger Input Current Too Low
• P0D2ABattery Charger Input Current Too High

Sources

• gsi.ext.gm.com: 11OBDG01 HYBRID Diagnostics
• gsi.ext.gm.com: 16OBDG01 Hybrid Diagnostics
• mitsubishitechinfo.com: M154950400001600USA

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.