Is it safe to drive with this code?

Short journeys may be possible, but continued driving can lead to worsening transmission damage and more costly repairs. If the transmission enters limp mode or exhibits severe shifting problems, avoid driving and arrange recovery. Always refer to our site disclaimer for professional advice.

The code itself does not trigger an automatic failure, but if the malfunction indicator lamp (check engine light) is illuminated at the time of the MOT test, this may result in a fail. See our disclaimer for full MOT guidance.

Roughly how much does it cost to fix?

Expect low to mid three-figure costs for a straightforward filter and fluid change at an independent garage, rising to high three-figure sums if additional components like solenoids or wiring require attention. Dealer labour rates and complex transmission designs push costs higher; parts quality and vehicle accessibility also influence the final bill.

Can I just clear the code and keep driving?

Clearing the code without addressing the underlying filter deterioration will typically cause it to return, often within a short distance or on the next start. The contaminated filter needs replacement to restore proper transmission function and prevent further internal wear.

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← All fault codes | Gearbox

P088A

Powertrain

Transmission Fluid Filter Deteriorated

The transmission control module has detected that the transmission fluid filter has become contaminated or worn, which may affect shifting performance.

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ⓘ Information only. This page provides general educational information about fault code P088A. We do not assess the urgency or safety implications of any specific fault. That requires in-person diagnosis by a qualified mechanic. Full terms.

Recommended next steps

Whether a fault is urgent, drivable, or routine depends entirely on the cause on a specific vehicle, and that can only be determined by a qualified mechanic with diagnostic equipment. If a warning light is illuminated, the most reliable next step is professional diagnosis.

What does P088A mean?

P088A is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Transmission Fluid Filter Deteriorated.

This is a standardised OBD-II code. The technical definition is the same regardless of the make or model of vehicle, although specific causes and symptoms can vary between vehicles.

About Gearbox codes

Gearbox (transmission) codes report faults from the transmission control module: solenoid issues, fluid pressure problems, slipping clutches on dual-clutch boxes, and torque converter faults. Many trigger limp mode that locks the gearbox into a single forward gear.

P088A is one of 643 codes in this category. Browse all Gearbox codes →

What we know about P088A specifically

We record the SAE J2012 standardised definition and the system this code belongs to, but we have not yet published detailed driver-reported symptoms, common causes, or step-by-step diagnostic guidance for P088A.

Rather than invent that information by generating generic content from a template, we leave it out. For specific guidance, the most reliable sources are:

•your vehicle's own service manual or manufacturer-specific technical bulletins
•a qualified mechanic with a manufacturer-level diagnostic tool
•a marque specialist familiar with your make and model

Codes nearby

Codes adjacent to P088A in the P-code series. Many fault codes appear together with their neighbours because they relate to the same circuit or component.

P0887 TCM Power Relay Control Circuit High

P0888 TCM Power Relay Sense Circuit

P0889 TCM Power Relay Sense Circuit Range/Performance

P088B Transmission Fluid Filter Very Deteriorated

P0890 TCM Power Relay Sense Circuit Low

P0891 TCM Power Relay Sense Circuit High

Other Gearbox codes

Other fault codes in the same system as P088A. The ones with detailed guides have plain-English explanations, symptoms, causes, and diagnostic steps.

P0700

Transmission Control System Malfunction Detailed guide

P0701

Transmission Control System Range/Performance

P0702

Transmission Control System Electrical

P0703

Torque Converter/Brake Switch B Circuit

P0704

Clutch Switch Input Circuit Malfunction

P0705

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

Spotted an issue or have something to add? Mechanics, technicians, and drivers who have first-hand experience with P088A can submit a correction or expansion. We review every submission before publishing, mechanic submissions are prioritised.

Information only, not professional advice

The information on this page is provided for general guidance and educational purposes only. It is not a substitute for diagnosis or repair advice from a qualified mechanic. Always verify any fault before paying for repairs. carfaultcodes.co.uk accepts no liability for decisions made based on this information. Full terms →

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