P0238 - Turbocharger/Supercharger Boost Sensor A Circuit High

Boost sensor A signal is too high.

Code Overview

Boost sensor A signal is too high.

Common Causes

• Open circuit
• Short to voltage
• Sensor fault
• Connector issue

Diagnostic Steps

1. Inspect for an open signal wire or damaged connector
2. Check for a short to voltage
3. Compare scan data to a mechanical boost reading if available

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.