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.
Manufacturer communications
2Original wording in English
VOLVO, VOLVO BUS
Reported code forms U029D
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
VOLVO BUS
Reported code forms U029D00
Repair instructions to address fault codes. U029D00 Lost Communication With NOx Sensor "A"
Check vehicle applicability
9A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Volvo Bus | 9700 | 2021 |
| Volvo Bus | 9700 | 2020 |
| Volvo Bus | 9700 | 2019 |
| Volvo Bus | 9700 | 2018 |
| Volvo Bus | 9700 | 2017 |
| Volvo Bus | 9700 | 2016 |
| Volvo Bus | 9700 | 2015 |
| Volvo Bus | 9700 | 2014 |
| Volvo Bus | 9700 | 2013 |
Historical records · 802 · Historical vehicle association; OBD-II compatibility is not established by this record.
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.
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.