TSB 37773.1.2 — Volvo Service bulletin
37773.1.2 is a service bulletin on file with NHTSA for the Volvo XC90, 2019–2022 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This is a TJ - Text only no attachments - If customer experiences an incorrect ambient temperature reading in DIM (Driver Information Module) or reduced A/C performance, follow the advice under Service. Please refer to the wiring diagram in VIDA to locate the relevant circuit…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 37773.1.2 names
| Vehicle | Model years |
|---|---|
| Volvo XC90 | 2019, 2020, 2021, 2022 |
Every document filed under 37773.1.2
| Document ID | Filed | Type |
|---|---|---|
| 37773.1.2 | March 19, 2026 | Service bulletin |
Questions buyers ask
What is TSB 37773.1.2?
37773.1.2 is a service bulletin filed with NHTSA by Volvo, covering the Volvo XC90 across the 2019–2022 model years. NHTSA's summary reads: This is a TJ - Text only no attachments - If customer experiences an incorrect ambient temperature reading in DIM (Driver Information Module) or reduced A/C performance, follow the advice under Service. Please refer to the wiring diagram in VIDA to locate the relevant circuit…
Which vehicles does 37773.1.2 cover?
NHTSA's file names Volvo XC90 (2019–2022). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 37773.1.2 a recall, and is the repair free?
No. 37773.1.2 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 37773.1.2?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 37773.1.2, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 37773.1.2. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.