P0A2F: Drive Motor A Over Temperature

Unlike its siblings, P0A2F reports a real thermal problem: the sensor works, but motor A stays too hot. GM sets it on 2013 two-mode trucks when the temperature exceeds 200 °C and does not fall below the 135 °C reset level, Type B, provided no circuit or plausibility fault is active. The 2011 table uses 159 °C; on the 2013 MGU mild hybrid the limit is 165 °C, and torque is already cut linearly from 100 % to zero between 155 and 165 °C. Hyundai lists the code in its Sonata Hybrid sensor bulletin, so a skewed sensor can mimic it. McLaren handles over-temperature under P0A2B98 and points to the dielectric cooling circuit. Expect a warning and sharply reduced electric power.

Symptoms

• Hybrid system or check engine warning
• Electric drive power drops sharply or is cut
• Engine runs more often to support the drive

Most likely causes

• Motor cooling failure such as a weak pump, low fluid or blocked cooler
• Sustained high load such as towing or long climbs in electric mode
• Temperature sensor reading too high while still within range

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. Make sure the battery cooling air intake is clean
3. Check the 12 V auxiliary battery, which can also trigger warnings
4. Leave any high-voltage measurements to a specialized repair shop

Good to know

• Repair difficulty: hard
• It can trigger limp mode.
• It affects emissions.

What each character of P0A2F means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• A: Hybrid or air and fuel
• 2F: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0A2F?

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 P0A2F?

The most common causes are: motor cooling failure such as a weak pump, low fluid or blocked cooler; sustained high load such as towing or long climbs in electric mode; temperature sensor reading too high while still within range.

Related codes

• P0A2BDrive Motor A Temperature Sensor A Circuit Range/Performance
• P0A2CDrive Motor A Temperature Sensor A Circuit Low
• P0A2DDrive Motor A Temperature Sensor A Circuit High
• P0A35Drive Motor B Over Temperature
• P0A3CDrive Motor A Inverter Over Temperature

Sources

• gsi.ext.gm.com: 13OBDG06 Hybrid Diagnostics
• gsi.ext.gm.com: 13OBDG05C Hybrid Diagnostics
• static.nhtsa.gov: SB 10082433 0699
• static.nhtsa.gov: MC 11014648 0001

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.