Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer communications
5Original wording in English
CADILLAC, CHEVROLET, GMC
This Preliminary information communicates During inspection of the vehicle for an unrelated concern the technician may notice that one or more of the following Cylinder Deactivation Performance DTC(s) P3498, P3499, P349A, P349B, P349C, P349D, P349E, or P349F may be set in history. and not requesting MIL. If any of these DTCs are…
CADILLAC, CHEVROLET, GMC
This Preliminary information communicates During inspection of the vehicle for an unrelated concern the technician may notice that one or more of the following Cylinder Deactivation Performance DTC(s) P3498, P3499, P349A, P349B, P349C, P349D, P349E, or P349F may be set in history. and not requesting MIL. If any of these DTCs are…
MAZDA
If you receive a customer complain of lack of power, rough idle, engine noise with stored DTC's P0340:00, P0304:00, P3400:00, P349B:00, and/or P3498:00, perform the following.
MAZDA
If you receive a customer complain of lack of power, rough idle, engine noise with stored DTC's P0340:00, P0304:00, P3400:00, P349B:00, and/or P3498:00, perform the following.
Check vehicle applicability
10A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE NA ↗ | 2021 |
| Chevrolet | SILVERADO 1500 ↗ | 2019 |
| Chevrolet | SUBURBAN ↗ | 2021 |
| Chevrolet | TAHOE ↗ | 2021 |
| GMC | SIERRA 1500 ↗ | 2019 |
| GMC | YUKON ↗ | 2021 |
| Mazda | CX-5 ↗ | 2019 |
| Mazda | CX-5 ↗ | 2018 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.