P101C on Mitsubishi
Quick Charging Contactor (N) Stuck / Welded
P101C on Mitsubishi vehicles indicates quick charging contactor (n) stuck / welded. Au7o has documented this code across 1 Mitsubishi model — most commonly on Outlander. The PHEV-ECU checks the state of the negative-side quick-charging contactor against its command. When the contactor remains closed after the ECU has commanded it open (welded or mechanically stuck contacts), the ECU stores P101C. The companion code P101B covers the positive-side (P) contactor. Because a stuck DC-charge contactor is a high-voltage safety hazard, the vehicle restricts motor output and disables quick charging; if P101B and P101C set together the vehicle will not enter 'Ready' at all. Typical repair costs on Mitsubishi range from $150 to $2,500, depending on the specific model and root cause.
Common Causes of P101C
- •Negative quick-charging contactor contacts welded shut from arcing during DC fast charge
- •Contactor mechanical failure or coil fault
- •Abnormal current detected during fast charge (addressed by a Mitsubishi PHEV-ECU software update on some vehicles)
- •Wiring or connector fault in the contactor drive circuit
P101C on Mitsubishi by Model
Mitsubishi Outlander(1 issue)
- PHEV Quick-Charge (CHAdeMO) Contactor Welds Shut — DC Fast Charging Fails with P101C2014-2021
The PHEV isolates its CHAdeMO fast-charge port from the traction pack with quick-charge contactors. An abnormal-current event during a DC fast charge session — a station that drops or spikes current, or a handshake that aborts mid-session — can weld the negative quick-charge contactor closed. Once welded, the EV-ECU can no longer prove the fast-charge circuit is isolated, so it sets P101C and throws 'EV system service required'; owners on the PHEV forum report the fault appearing immediately after a fast charge, sometimes with the charging station itself reporting 'failure to communicate with vehicle'. AC (Type 1/Type 2) charging often still works, which is what makes people mis-blame the charge point rather than the car.
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View P101C across all makes →Frequently Asked Questions
What does P101C mean on Mitsubishi?▼
P101C stands for "Quick Charging Contactor (N) Stuck / Welded." The PHEV-ECU checks the state of the negative-side quick-charging contactor against its command. When the contactor remains closed after the ECU has commanded it open (welded or mechanically stuck contacts), the ECU stores P101C. The companion code P101B covers the positive-side (P) contactor. Because a stuck DC-charge contactor is a high-voltage safety hazard, the vehicle restricts motor output and disables quick charging; if P101B and P101C set together the vehicle will not enter 'Ready' at all. On Mitsubishi specifically, this code is documented across 1 model.
What causes P101C on Mitsubishi vehicles?▼
Common causes on Mitsubishi: Negative quick-charging contactor contacts welded shut from arcing during DC fast charge, Contactor mechanical failure or coil fault, Abnormal current detected during fast charge (addressed by a Mitsubishi PHEV-ECU software update on some vehicles), Wiring or connector fault in the contactor drive circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P101C on a Mitsubishi?▼
Repair costs on Mitsubishi range from $150 to $2,500, depending on the specific model and root cause.
Which Mitsubishi models have P101C documented?▼
Au7o has documented P101C on 1 Mitsubishi model: Outlander.