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.
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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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0638:00Throttle valve actuator control range/performance problem (one drive cycle DTC)
P0638POWER MANAGEMENT
Manufacturer communications
16Original wording in English
MAZDA
After parking the vehicle in temperatures below freezing, some customers may experience a lack of power with the check engine light on and DTCs P0638:00 and/or P2112:00 stored in memory. - P0638:00: Throttle valve actuator control range/performance problem (one drive cycle DTC) - P2112:00: Throttle valve actuator motor current r…
MAZDA
After parking the vehicle at temperatures below the freezing, some customers may experience a lack of power with the check engine light on and DTC P0638:00 and/or P2112:00 stored in memory. - P0638:00: Throttle valve actuator control range/performance problem (one drive cycle DTC) - P2112:00: Throttle valve actuator motor curren…
MAZDA
After parking the vehicle at temperatures below the freezing, some customers may experience a lack of power with the check engine light on and DTC P0638:00 and/or P2112:00 stored in memory. - P0638:00: Throttle valve actuator control range/performance problem (one drive cycle DTC) - P2112:00: Throttle valve actuator motor curren…
HYUNDAI
HYUNDAI: SANTE FE 2010-2012; ECM SOFTWARE IS REQUIRED FOR 3.5L SANTE FE VEHICLES WITH MALFUNCTION CODES DTC P0638, DTC P2106, & P2110. *LJ
Check vehicle applicability
75A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | CTS ↗ | 2003 |
| Hyundai | AZERA ↗ | 2009 |
| Hyundai | AZERA ↗ | 2008 |
| Hyundai | AZERA ↗ | 2007 |
| Hyundai | AZERA ↗ | 2006 |
| Hyundai | ENTOURAGE ↗ | 2009 |
| Hyundai | ENTOURAGE ↗ | 2008 |
| Hyundai | ENTOURAGE ↗ | 2007 |
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.