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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0638POWER MANAGEMENTManufacturer communications
3Original wording in English
HYUNDAI
Reported code forms P0638
HYUNDAI: SOME VEHICLES MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP ILLUMINATED WITH THE ETC (ELECTRONIC THROTTLE CONTROL) SYSTEM RELATED DTC P2135 ( FORCED LIMITED POWER) OR DTC P0638 (POWER MANAGEMENT). *PE
HYUNDAI
Reported code forms P0638
HYUNDAI: MIL ON DTC P2135 OR P0638 OR COLD ENGINE RPM FLUCTUATION- TPS REPLACEMENT & ECM UPDATE. SOME VEHICLES MAY EXPERIENCE EITHER SLIGHT ENGINE RPM FLUCTUATION AT COLD WARM UP OR MALFUNCTION INDICATOR LAMP…
HYUNDAI
Reported code forms P0638
HYUNDAI: SOME VEHICLES MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP ILLUMINATED WITH THE ETC (ELECTRONIC THROTTLE CONTROL) SYSTEM RELATED DTC P2135 OR DTC P0638. *PE
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Hyundai | ENTOURAGE | 2009 |
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.