P1DB7 on FIAT
Torque converter clutch performance fault stored by the transmission computer on Jeep and Chrysler vehicles
Severity: Severity not verified — if the car runs badly, have it inspected
Stellantis links the code to a check engine light and possible transmission fluid overheating, and owners report jerking and stalling, but we found no source on how long it is safe to drive.
It gets more serious if:
- Inspect soon: The transmission jerks on take-off, stalls or the fluid overheats.
This page covers only what differs on FIAT. For what P1DB7 means, the ranked causes and the test order, see the P1DB7 guide.
What's different on FIAT
FIATYour car
2017–2023 · 500X
Supported by vehicle dataBulletin 21-040-25 names P1DB7 on the Fiat 500X. Stellantis says to reprogram the TCM. Only the bulletin summary was read.
21-040-25Status unverified
948TE Transmission Reaction Shaft Service Bushing Kit Customers may experience a Malfunction Indicator Lamp
2017–2025promaster, promaster-city · issued · NHTSA 11024056
Reprograms the TCM with the latest software for a MIL with P1DB7-00, torque converter clutch performance. Only the NHTSA flat-file summary was read, not the bulletin itself.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- FCA 21-018-25 Rev A: TCM updates for P1DB7-00 (2023 Wrangler)
- NHTSA complaint 1321610: 2015 Chrysler 200, P1DB7-00
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error