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Powertrain

P0890

Code meaning and manufacturer information

OBD-II / DTC

Reference meaning

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.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

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.

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Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

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Manufacturer communications

2

Original wording in English

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06-93-25 ↗

SUBARU

"This bulletin announces availability of reprograming files for the Engine Control Module (ECM) developed to address the following Diagnostic Trouble Codes (DTC): • P0890: TCM Power Relay Sense Circuit Low • P0700: Transmission Control System (MIL Resquest)"

09-117-24 ↗

SUBARU

This bulletin announces the availability of new reprogramming files developed to address cases of DTC P0890 (TCM Power Relay Sense Circuit Low) detected by the Engine Control Module (ECM).

Check vehicle applicability

17

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

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MakeModelModel year
SubaruASCENT ↗2024
SubaruASCENT ↗2023
SubaruASCENT ↗2022
SubaruASCENT ↗2021
SubaruASCENT ↗2020
SubaruASCENT ↗2019
SubaruCROSSTREK ↗2024
SubaruLEGACY ↗2024

Code meaning and manufacturer information

Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.

TCM Power Relay Sense Circuit Low

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.