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
7Original wording in English
ALFA ROMEO, CHRYSLER, DODGE, JEEP, RAM
Reported code forms P1D90
The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may…
DODGE, JEEP, RAM
Reported code forms P1D90
Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
RAM
Reported code forms P1D90-00
Transmission Oil Cooler Lines Not Fully Connected This bulletin involves inspecting the Transmission Oil Cooler (TOC) lines and reconnectingif necessary. Customers may experience a Malfunction Indicator Lamp (MIL)…
RAM
Reported code forms P1D90-00
Transmission Oil Cooler Lines Not Fully Connected This bulletin involves inspecting the Transmission Oil Cooler (TOC) lines and reconnectingif necessary. Customers may experience a Malfunction Indicator Lamp (MIL)…
RAM
Reported code forms P1D90-00
Transmission Oil Cooler Lines Not Fully Connected This bulletin involves inspecting the Transmission Oil Cooler (TOC) lines and reconnecting if necessary. Customers may experience a Malfunction Indicator Lamp (MIL)…
RAM
Reported code forms P1D90-00
Transmission Oil Cooler Lines Not Fully Connected This bulletin involves inspecting the Transmission Oil Cooler (TOC) lines and reconnecting if necessary. Customers may experience a Malfunction Indicator Lamp (MIL)…
Check vehicle applicability
152A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Alfa Romeo | GIULIA | 2026 |
| Alfa Romeo | GIULIA | 2025 |
| Alfa Romeo | GIULIA | 2024 |
| Alfa Romeo | GIULIA | 2023 |
| Alfa Romeo | GIULIA | 2022 |
| Alfa Romeo | GIULIA | 2021 |
| Alfa Romeo | GIULIA | 2020 |
| Alfa Romeo | GIULIA | 2019 |
| Alfa Romeo | GIULIA | 2018 |
| Alfa Romeo | GIULIA | 2017 |
| Alfa Romeo | STELVIO | 2026 |
| Alfa Romeo | STELVIO | 2025 |
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.