P0E27: Drive Motor Inverter Temperature Sensor G Circuit Intermittent/Erratic

P0E27 marks short dropouts or jumps in the signal of inverter temperature sensor G. Between the events the reading is normal again, which is what separates it from the steady faults P0E25 and P0E26. No manufacturer documents P0E27 publicly; Mitsubishi, the one documented user of sensor G on the 2023 Outlander PHEV, checks that sensor for plausibility and for both voltage limits only. CARB expects hybrid sensor circuits to be monitored for circuit faults, which covers unstable signals as well. Likely sources are a connector with poor contact, a cracked solder joint on the sensing board or a thermistor with unstable resistance. The code can vanish before the workshop sees it, and the drive may be limited while it is active.

Symptoms

• Warning light that comes and goes
• Brief drops in electric drive power

Most likely causes

• Intermittent contact at an inverter connector
• Cracked solder joint on the sensing board
• Thermistor with unstable resistance

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. Gently move the wiring with the engine running and watch whether the reading changes.
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

Good to know

• It can trigger limp mode.
• It affects emissions.

What each character of P0E27 means

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

Frequently asked questions

Can I keep driving with code P0E27?

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 P0E27?

The most common causes are: intermittent contact at an inverter connector; cracked solder joint on the sensing board; thermistor with unstable resistance.

Related codes

• P0E23Drive Motor Inverter Temperature Sensor G Circuit
• P0E24Drive Motor Inverter Temperature Sensor G Circuit Range/Performance
• P0E25Drive Motor Inverter Temperature Sensor G Circuit Low
• P0E26Drive Motor Inverter Temperature Sensor G Circuit High
• P0E2CDrive Motor Inverter Temperature Sensor H Circuit Intermittent/Erratic
• P0BE4Drive Motor Inverter Temperature Sensor F Circuit Intermittent/Erratic

Sources

• law.cornell.edu: 13 CCR 1968.2
• mitsubishitechinfo.com: N503240310000700USA

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.