Mazda Diagnostic Trouble Codes
OBD2 fault codes seen on Mazda vehicles, with what each code means and the Mazda models it shows up on. Each code's page has its typical repair cost range.
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Intake Air Temperature Sensor 1 Circuit
- Mazda CX-30 • 2019-2024
On the SKYACTIV-G petrol engines Mazda logs P0110:00 as an internal malfunction of IAT sensor No.1, which is…
Catalyst System Efficiency Below Threshold (Bank 1)
- Mazda 3 • 2012-2024
On Mazda Skyactiv-G petrol engines (Mazda3, Mazda6, CX-5 with the 2.0 and 2.5), P0420 is most often a…
NOx Adsorber Efficiency Below Threshold (Bank 1)
- Mazda CX-3 1.8 SKYACTIV-D • 2018-2021
Mazda's 2018 Euro 6d-TEMP announcement says a NOx storage catalyst was enough for the 1.8 SKYACTIV-D, while…
O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1)
- Mazda5 • 2009
One owner report on a 2009 Mazda5 describes P2243 on the front (upstream) oxygen sensor. Reseating the…
Fuel System
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