What P0A43 means
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.
How the engine computer detects it
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.
Written from public technical sources and not yet checked by a mechanic. How we write these pages
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
Common causes
- Loose or spread terminal in the resolver connector, losing contact under vibration Most likely
- Hybrid control or inverter software needing an update (Stellantis) Possible
- Chafed resolver wiring making intermittent contact Possible
- Intermittent fault in the power inverter module Less likely
How to diagnose P0A43
- Read every stored code with an OBD-II scanner. If misfire or fuel trim codes are there too, fix those first: they often cause this one.
- Inspect the parts involved: drive motor a position sensor, wiring harness, hybrid control module.
- Work through the causes above from most to least likely, cheapest checks first.
- Clear the code and drive a full drive cycle to confirm the repair held.
Vehicles that report P0A43 most
| Vehicle | Years | Reports | Share | Median miles |
|---|---|---|---|---|
| Chrysler Pacifica | 2020–2025 | 22 | — | |
| Chrysler Pacifica Plug-In Hybrid | 2020–2022 | 5 | — |
Counts of owner complaints to the NHTSA that mention P0A43 (27 in total), not failure rates: popular models get more complaints simply because more of them are on the road. Models with fewer than 3 complaints are left out.
Reading the code
- P
- Powertrain
- 0
- Generic (SAE) code
- A
- Hybrid and electric propulsion
- 43
- Specific fault
Questions drivers ask
Can I drive with code P0A43?
If the car drives normally, drive gently to a shop that services hybrids. If it shows a hybrid system warning, loses power or won't go into Ready, pull over and have it towed. Never touch orange high-voltage cables.
Will my car pass an emissions inspection with P0A43?
Probably not in states that test vehicles with an OBD-II scan: an emissions-related code that keeps the check engine light on is usually an automatic fail. Rules differ by state and county, so check yours.
This page is general information, not a substitute for a professional diagnosis. Repair costs are rough estimates for parts and labor and vary by vehicle and region.