P0236 — Turbocharger Boost Sensor A Circuit Malfunction
Drive with caution — fix soon.
What P0236 means
This code means the engine computer detected a malfunction in the circuit for turbocharger boost sensor 'A', which measures the pressure produced by the turbo. When the signal is faulty or out of range, the computer can't manage boost properly, often leading to reduced power or limp mode. Common fixes include replacing the boost pressure sensor, repairing wiring or connectors, or clearing the fault after fixing a vacuum or intake leak.
Common symptoms
- Check engine light is on
- Reduced engine power or limp mode
- Hesitation or sluggish acceleration
- Poor fuel economy
- Erratic or weak turbo boost
Common causes
- Faulty turbocharger boost pressure sensor
- Damaged wiring or corroded connector at the sensor
- Open or short in the sensor circuit
- Vacuum or intake leak affecting boost readings
- Poor electrical ground or supply voltage to the sensor
Typical repair cost
$120 – $500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0236 code?
Usually yes, at least for short trips, but the car may have reduced power or be in limp mode. It's not an immediate emergency, but you should get it checked soon so the turbo system works properly again.
How much does it cost to fix a P0236 code?
Most repairs cost between $120 and $500. Replacing the boost sensor is usually affordable, with wiring or connector repairs adding to the price depending on the labor involved.
Is a P0236 code serious?
It's usually moderate rather than urgent. The main effects are reduced power and worse fuel economy, but leaving it unfixed means the computer can't manage boost correctly, so it's best addressed soon.
What does the boost sensor actually do?
The boost pressure sensor tells the engine computer how much pressure the turbocharger is producing. The computer uses that reading to control boost and fueling, so a bad signal can throw off power delivery and efficiency.