P0237 Code: Turbocharger Boost Sensor A Circuit Low Input
🟠 Moderate severity · drivable
Drivable, but the boost reading is too low, so the car may feel slow — fix it soon.
What P0237 means
The boost pressure sensor A is sending voltage that's too low, which the computer reads as little or no boost. This can be a bad sensor, a leaking hose, or a real boost leak in the intake system.
Symptoms
- Check engine light is on
- Loss of power
- Turbo not building boost
- Poor acceleration
Common causes
- most common: Faulty boost pressure sensor
- common: Leaking or disconnected hose to the sensor
- common: Boost or vacuum leak in the intake system
- less common: Wiring shorted to ground in the sensor circuit
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the boost pressure sensor | Yes | $50–150 |
| Inspect and replace the sensor hose | Yes | $10–50 |
| Repair boost or vacuum leaks | Mechanic | $50–200 |
Frequently asked questions
Can I drive with a P0237 code?
Yes, but the car may feel slow because the computer sees little or no boost. Fix it soon.
What is the most common cause of P0237?
A faulty boost sensor, or a leaking hose that makes the sensor read too little pressure.
How much does it cost to fix a P0237?
Typically $50–150 for a new sensor, or $10–50 for a hose replacement.
Related codes
P0235
P0235 Code: Turbocharger Boost Sensor A Circuit Malfunction
P0236P0236 Code: Turbocharger Boost Sensor A Circuit Range/Performance
P0238P0238 Code: Turbocharger Boost Sensor A Circuit High
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.