P0A43: Drive Motor A Position Sensor Circuit Intermittent

P0A43 is set when the motor A resolver signal drops out or jumps only briefly, so that neither a steady low, high nor a lasting loss is confirmed. Stellantis uses it on the Pacifica Hybrid: NHTSA files show P0A43-00 stored in the hybrid control processor next to P0A3F and P0A45, and a 2026 parts review tells dealers to check active bulletins and flash the hybrid control processor before ordering a new power inverter module. No public set threshold exists. GM's Bolt bulletin shows how a slightly spread connector terminal causes such short dropouts. P0A3F, P0A41 and P0A42 cover permanent faults. Expect a warning that may vanish after a restart, sometimes with a short loss of drive.

Symptoms

• Hybrid system warning or MIL that comes and goes
• Brief loss of propulsion, normal again after restart
• Code stored as history without current symptoms

Most likely causes

• Loose or spread terminal in the resolver connector, losing contact under vibration
• Hybrid control or inverter software needing an update (Stellantis)
• Chafed resolver wiring making intermittent contact
• Intermittent fault in the power inverter module

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 P0A43 means

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

Frequently asked questions

Can I keep driving with code P0A43?

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 P0A43?

The most common causes are: loose or spread terminal in the resolver connector, losing contact under vibration; hybrid control or inverter software needing an update (Stellantis); chafed resolver wiring making intermittent contact.

Related codes

• P0A3FDrive Motor A Position Sensor Circuit
• P0A40Drive Motor A Position Sensor Circuit Range/Performance
• P0A41Drive Motor A Position Sensor Circuit Low
• P0A42Drive Motor A Position Sensor Circuit High
• P0A49Drive Motor B Position Sensor Circuit Intermittent
• P0A78Drive Motor A Inverter Performance

Sources

• static.nhtsa.gov: MC 11031463 0001
• static.nhtsa.gov: INRD RQ24004 11837P1
• static.nhtsa.gov: MC 10232147 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.