P0238
Turbocharger Boost Sensor A Circuit High
System: Air/Fuel
Severity: medium
What does P0238 mean?
The DTC P0238 (Turbocharger Boost Sensor A Circuit High) is a fault code stored by the ECU when it detects a MAP sensor high condition in the air/fuel subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P0238
- Faulty MAP sensor
- Short to power in MAP wiring
- Connector corrosion
How to fix P0238
Replace MAP sensor and inspect harness. DaVinci can recalibrate boost limits if MAP signal is noisy after repair.
Tuning approach with DaVinci Deluxe
For P0238, DaVinci Deluxe offers the following ECU map adjustments and software solutions:
- MAP scaling adjust
- Boost limit recalibrate
Need to fix P0238 on your ECU?
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