TransmissionGeneric OBD-II codeUrgency: Garage soon
Code P0897: automatic gearbox oil deteriorated
P0897 means: transmission fluid deteriorated.[1][2][3][4][5] The gearbox control unit (TCM) considers the automatic gearbox oil to have degraded beyond an acceptable limit. According to CódigosDTC, it estimates the oil's service life from the temperature at which the gearbox operates, with a counter that advances faster the hotter it runs, and stores the code when that calculation crosses the expected threshold.[1][4]
What code P0897 means
The gearbox control unit (TCM) considers the automatic gearbox oil to have degraded beyond an acceptable limit. According to CódigosDTC, it estimates the oil's service life from the temperature at which the gearbox operates, with a counter that advances faster the hotter it runs, and stores the code when that calculation crosses the expected threshold.[1][4]
Deteriorated oil lubricates and cools less well, increases friction, makes the gearbox run hotter and accelerates the wear of its parts, according to TaT.[4]
It is a generic code of the OBD-II standard (DTCSearch and TaT classify it this way), in the gearbox group.[3][4]
Original definition (SAE J2012): Transmission Fluid Deteriorated[1][2][3][4][5]
Causes of P0897
From most to least likely, according to the sources.
Symptoms
- Engine fault warning light on.[1]Engine warning light: faults that cause it
- Rise in the temperature of the gearbox oil.[1]
How to diagnose P0897
In order: from the most likely and cheapest to check to the most expensive.
- 1Check the model's technical bulletins.[1]
- 2Check that the oil level is within the acceptable range. If it is very low, look for leaks or other damage and fix them.[1]
- 3Check whether the oil has contaminants (colour, smell, debris) and carry out the necessary corrections, which the manufacturer specifies for each gearbox.[1]
- 4With diagnostic equipment, check whether there are more gearbox codes stored before clearing this one.[3]
Can I keep driving with P0897?
Garage soon
The sources see it as not very urgent. AutoDTCs rates it as moderate (it should be repaired soon and does not usually leave the car stranded), and Carly says it is not serious for now but should be monitored. Even so, according to TaT deteriorated oil overheats the gearbox and accelerates its wear, so it should not be postponed for long.[2][4][5]
Documented faults related to P0897
Known faults of specific engines and cars, with their repair cost, the affected years and their sources.
Automatic gearbox (torque converter and CVT): the most serious faults by engine and car
- Critical severityFrequency: CommonMultitronicWear of the variator chain and conesYes: the variator uses a chain of more than 1,000 links between two pairs of cones that wears with mileage, especially if the oil is not changed regularly. Gebrauchtwagenberater ties the gearbox's reputation to "numerous total failures"; Schaeffler/LuK sells a kit to repair the chain.
- Critical severityFrequency: Common2.0 CDI (OM640)Costly failure of the Autotronic (CVT) automatic gearboxYes: the Autotronic continuously variable gearbox, optional on the 180 CDI and 200 CDI, is the problem cited most by owners of the 140 hp version (24 of 114 testimonies) and a fault hotspot according to the ADAC up to 2006. A German source recommends avoiding it and choosing the manual gearbox.
- High severityFrequency: CommonMultitronicControl unit (TCU) failure and limp modeYes: the multitronic control unit, especially in the 01J code (up to 2007), is one of its best-documented weak points. Overheating with oil seeping into the control unit causes fault warnings and limp mode and, if ignored, can end up damaging the gearbox itself.
- High severityFrequency: Common7G-Tronic / 9G-TronicConductor plate and speed sensor failure (limp mode)Yes: one of the most cited weak points of the 7G-Tronic (722.9) is the internal conductor plate, which integrates the turbine, output and intermediate-shaft speed sensors; if it fails it can trigger a limp mode with delayed shifts or harsh jerks, although it does not always require replacing the whole gearbox.
- High severityFrequency: CommonAudi A6 C6Wear and failures of the Multitronic automatic gearbox on front-wheel-drive versionsYes: on front-wheel-drive versions with the Multitronic (CVT) gearbox, gebrauchtwagenberater.de documents jerking when pulling away that can progress to complete failure, especially on older cars; fiches-auto.fr adds selector lock-ups and torque converter breakages. The quattro versions, with the Tiptronic gearbox, do not share this problem.Repair (garage): €1,000Appears at around 120,000 km
- High severityFrequency: CommonMINI Cooper R50Faults in the CVT automatic gearbox, the manual gearbox and the clutchAccording to the reports collected by fiches-auto.fr, the Mini R50 accumulates 22 gearbox mentions and 32 clutch mentions, and the CVT automatic variant is described as fragile and 'to be avoided'. Wikipedia confirms that the CVT and the manual gearboxes were fitted depending on the year.
Frequently asked questions
What does it mean that the gearbox oil is “deteriorated”?
That the control unit has calculated that the oil has lost its properties. According to CódigosDTC, it does this by estimating the oil's service life based on the gearbox's operating temperature.[1]
What should I check first with a P0897?
The gearbox oil level and condition, any leaks, and the model's technical bulletins. CódigosDTC recommends correcting the level if it is very low and dealing with contamination.[1]
Is P0897 serious?
The sources see it as not very urgent: AutoDTCs rates it as moderate and Carly says it is not serious for now but should be monitored. TaT points out that degraded oil lubricates and cools less well and accelerates gearbox wear.[2][4][5]
Will I pass the MOT with code P0897?
If the code has switched on the engine warning light, no: with that light on, the inspection records a serious defect, and on Euro 5 and Euro 6 cars the ITV (Spain's roadworthiness inspection, similar to the MOT) also reads the OBD diagnostic system. Repair the fault before you go; clearing the code just before the inspection does not help either, because it counts as a serious defect.[6]
Not sure what is wrong with your car? Describe what you notice in the symptom diagnosis or see all fault codes.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- P0897 - Fluido de transmisión deterioradoCódigosDTC · Technical documentation · consulted 31 October 2026 · in Spanish
- P0897 - Transmission Fluid DeterioratedAutoDTCs · Technical documentation · consulted 31 October 2026
- P0897 - Transmission Fluid DeterioratedDTCSearch · Technical documentation · consulted 31 October 2026
- P0897 - Transmission Fluid DeterioratedThe Automotive Technician (TaT) · Technical documentation · consulted 31 October 2026
- P0897 Transmission Fluid DeterioratedCarly · Technical documentation · consulted 31 October 2026
- Desmontando mitos: ¿puede pasar mi coche la ITV con el testigo de «avería motor» encendido?Diariomotor · Motoring press · published 8 March 2021 · consulted 2 October 2026 · in Spanish