P0237: Turbocharger Boost Sensor A Circuit Low
Can you still drive? You can drive short distances, but expect reduced power. Avoid heavy acceleration until the issue is diagnosed.
What Does P0237 Mean?
Code P0237 indicates that the turbocharger or supercharger boost pressure sensor is sending a voltage signal that is below the expected range. The ECM relies on this sensor to regulate boost pressure, and a low signal may indicate a wiring fault, failed sensor, or actual low boost condition.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Faulty boost pressure sensor
- Damaged wiring or connector to sensor
- Boost leak in intercooler piping
- Failed turbocharger
Symptoms
- Check engine light on
- Reduced engine power
- Turbo not building boost
- Poor acceleration
- Limp mode activated
Diagnostic Steps
- 1Read freeze frame data for operating conditions
- 2Inspect boost pressure sensor connector and wiring
- 3Test sensor voltage with multimeter at idle and under load
- 4Check for boost leaks in intercooler piping
- 5Verify turbocharger spins freely
Recommended Parts & Tools
boost pressure sensor
turbo intercooler hose
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $100 - $800 |
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Chat with AI About P0237Commonly Affected Vehicles
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Frequently Asked Questions
What does a low boost sensor circuit mean?
It means the ECM is receiving a voltage signal below the normal range from the boost pressure sensor, which could be a wiring issue or a failed sensor.
Will P0237 damage my turbo?
The code itself won't damage the turbo, but if the underlying cause is a boost leak or failing turbo, continued driving could worsen the problem.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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