P0A92: Hybrid Generator Performance

P0A92 indicates that the generator of a hybrid system, the electric machine mainly used to convert engine power into electrical energy, does not reach the expected output, speed or torque. CARB requires manufacturers to describe how they monitor the generator so that faults preventing it from working are detected. FCA documents the code for the 2020 Jeep Compass and Renegade plug-in hybrids (bulletin 08-057-21): it appears together with drive motor phase current sensor codes, and the fix is a software update of the hybrid control processor and power inverter module. A turtle (limp home) lamp may accompany it. P0A90/P0A91 cover the drive motors; P0A3F and similar codes cover generator position sensing.

Symptoms

• MIL and hybrid system warning
• Limp home (turtle) lamp, reduced power
• Reduced charging of the high-voltage battery

Most likely causes

• Hybrid controller or inverter software needing update (documented by FCA)
• Inverter phase current sensing fault
• Internal generator fault (winding, bearing, position sensor)

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

Good to know

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

What each character of P0A92 means

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

Frequently asked questions

Can I keep driving with code P0A92?

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 P0A92?

The most common causes are: hybrid controller or inverter software needing update (documented by FCA); inverter phase current sensing fault; internal generator fault (winding, bearing, position sensor).

Related codes

• P0A90Drive Motor A Performance
• P0A91Drive Motor B Performance
• P0A3FDrive Motor A Position Sensor Circuit
• P0A40Drive Motor A Position Sensor Circuit Range/Performance
• P0BE6Drive Motor A Phase U Current Sensor Circuit Range/Performance

Sources

• static.nhtsa.gov: MC 10221199 9999
• static.nhtsa.gov: MC 10194050 9999
• law.cornell.edu: 13 CCR 1968.2

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.