P0237 - Turbocharger/Supercharger Boost Sensor A Circuit Low

Boost sensor A signal is too low.

Code Overview

Boost sensor A signal is too low.

Common Causes

• Short to ground
• Sensor fault
• Low reference voltage
• Connector issue

Diagnostic Steps

1. Check the signal circuit for a short to ground
2. Verify reference voltage at the sensor
3. Inspect the connector for oil or moisture intrusion

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.