Technical Service Bulletin 01-003-25 — 2019 MAZDA MAZDA3
ENGINE
Bulletin Details
| TSB ID | 01-003-25 |
| Manufacturer | |
| Vehicle | 2019 MAZDA MAZDA3 |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
Some customers may experience a check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: Engine takes longer to warm up. Engine temperature gauge fluctuates. Low coolant temperature indicator (blue) light stays on longer or turns on while driving. Poor heater performance, especially at idle. NOTE: Vehicles with SKYACTIV-G 2.5T are not applicable to this service information. If DTC P2B61:00 (Coolant control valve circuit range/performance) accompanies DTC P0126:00, this TSB is not applicable. Diagnose DTCs according to the instructions on MGSS online.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2019 MAZDA MAZDA3
01-001-25
ENGINE
CSP12 Dealer Letter
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FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
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SSPC5 Repair
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FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
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UNKNOWN OR OTHER
04-001-24
SERVICE BRAKES, HYDRAULIC
SA-077-23
SERVICE BRAKES, HYDRAULIC