P0D50: Battery Charger Hybrid/EV Battery Output Voltage Sensor Circuit Intermittent/Erratic

P0D50 stands for an unsteady output voltage signal from the on-board charger: the value jumps or drops out briefly instead of following the slowly changing battery voltage. No manufacturer documents P0D50 publicly. GM and Mitsubishi only publish fixed limits for this sensor (P0D4E, P0D4F) and, at GM, a comparison with the battery voltage (P0D4D), so a dedicated check for signal spikes would be an additional layer. CARB lets such checks count as part of the circuit and rationality monitoring it requires for the plug-in charger. Loose internal contacts, failing solder joints or interference within the charger are the likely triggers. Charging may stop and restart repeatedly; driving is unaffected.

High severity. Can I keep driving?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.

Symptoms

Charging repeatedly interrupted
Charge time noticeably longer than usual
Sporadic charging system warning

Most likely causes

Loose contact or cracked solder joint in the charger's measuring path
Electrical interference from the charger's power stage
Ageing voltage sensing electronics in the charger

What to check, in order

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

Read the codes with a hybrid-compatible scanner and write down the freeze frame data
Gently move the wiring with the engine running and watch whether the reading changes.
Make sure the battery cooling air intake is clean
Check the 12 V auxiliary battery, which can also trigger warnings
Leave any high-voltage measurements to a specialized repair shop

What each character of P0D50 means

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

Frequently asked questions

Can I keep driving with code P0D50?

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 P0D50?

The most common causes are: loose contact or cracked solder joint in the charger's measuring path; electrical interference from the charger's power stage; ageing voltage sensing electronics in the charger.

Related codes

Sources

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.