Mazda CX-5 Recall R/2021/439: Catalytic Reduction (Scr) System Wiring May Become Damaged By Contamination, Who Is Affected And What To Do
- Low
- How serious
- 11 Jan 2022
- Launched
- 2,187
- vehicles in the UK
- AM038A
- Manufacturer’s campaign code
Mazda recalled CX-5 vehicles built between 15 May 2018 and 24 September 2020. Catalytic Reduction (SCR) system wiring may become damaged by contamination. The dealer will inspect the SCR harness repair if necessary and fit protector. You won't usually pay for it.1
What’s Wrong
Catalytic Reduction (SCR) system wiring may become damaged by contamination.
DVSA's Original Wording
Concern: CATALYTIC REDUCTION (SCR) SYSTEM WIRING MAY BECOME DAMAGED BY CONTAMINATION Defect: Catalytic Reduction (SCR) system wiring may become damaged by contamination Remedy: Inspect the SCR harness repair if necessary and fit protector.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: catalytic reduction (scr) system wiring may become damaged by contamination.
The Fix
The dealer will inspect the SCR harness repair if necessary and fit protector.
Are You Affected?
CX-5 built between 15 May 2018 and 24 September 2020 may be included. Mazda estimates 2,187 vehicles in the UK. Enter your registration to check, then confirm by VIN with Mazda, because not every car in the date range may be included.
Which Car Is It?
Choose the make and model so we can match recalls to your car.
What To Do Now
- Check your car by registration above, then by VIN with Mazda.
- Book with any franchised Mazda dealer, quoting the campaign code AM038A or the DVSA reference R/2021/439. See how to get a Mazda recall fixed.
- Follow the letter's instructions until the repair is done. See can you drive a car with a recall?.
Related Recalls
| Launched | Vehicle and fault | Severity | Reference |
|---|---|---|---|
| CX-3, CX-5, MAZDA2, MAZDA3 and 2 moreLow pressure fuel pump impeller might become deformed | Urgent | R/2021/435 | |
| CX-5One or both LED daytime running lamps may flicker flash or fail completely | Book soon | R/2020/058 | |
| CX-5, MAZDA3, MAZDA6Soot may accumulate around the intake shutter valve on the inlet side of the engine | Low | R/2019/187 | |
| CX-5, MAZDA3, MAZDA6Injector mounting nuts tightening force may be insufficient | Urgent | R/2018/289 | |
| CX-5, MAZDA3, MAZDA6Fuel injector software does not control the electric current correctly | Urgent | R/2018/288 |
This is one of 103 Mazda recalls in DVSA’s data. The Mazda recall launched before it was R/2021/435 on 4 Jan 2022, for low pressure fuel pump impeller might become deformed. The one launched after it was R/2023/103 on 27 Mar 2023, for the recall affects the load bearing collar of a certain type of option fit accessory alloy…. You can also see every Mazda recall and all recalls launched in 2022.
Source: DVSA recall R/2021/439, launched 11 January 2022. Data updated 15 October 2026. How we grade urgency.
Sources
- The Code does not itself say repairs are free. GOV.UK guidance says "You will not usually have to pay for any repairs or parts under a safety recall." gov.uk Checked 15 Oct 2026.