What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
FORD, LINCOLN
Reported code forms P1A42:00
Some 2025-2026 Escape/Corsair PHEV only vehicles built on 21-Jul-2025 and through 27-Oct-2025 may exhibit an intermittent no crank/no start condition with an illuminated MIL and Service Engine Soon message in the…
FORD, LINCOLN
Reported code forms P1A42
Some 2020-2021 Aviator vehicles equipped with a 3.0L PHEV powertrain may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) U0100, P1A42 and/or P1A43 stored in battery energy…
Check vehicle applicability
24A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | ESCAPE PHEV | 2026 |
| Ford | ESCAPE PHEV | 2025 |
| Ford | F-250 SD | 2019 |
| Ford | F-250 SD | 2018 |
| Ford | F-250 SD | 2017 |
| Ford | F-350 SD | 2019 |
| Ford | F-350 SD | 2018 |
| Ford | F-350 SD | 2017 |
| Ford | F-450 SD | 2019 |
| Ford | F-450 SD | 2018 |
| Ford | F-450 SD | 2017 |
| Ford | F-550 SD | 2019 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.