P0236 🟠 Élevé ⚠️ Do not drive

Turbocharger Boost Sensor Circuit Range — Limp Mode

The turbo boost pressure sensor (MAP sensor) is reading an abnormal pressure. The ECU activates limp mode, limiting power to ~30%.

🚗 Common on: All turbocharged petrol or diesel engines

💷

Average repair cost

£5 (hose clamp) — £1200 (turbo replacement)

🔍 Symptoms

  • → Limp mode active
  • → Very low power (~30% max)
  • → Check engine light on
  • → Unusual turbo whistle

⚙️ Common Causes

  1. 1Split or disconnected turbo hose (most common and cheapest fix)
  2. 2Faulty MAP/boost sensor
  3. 3Stuck wastegate actuator
  4. 4Failing turbocharger

🔧 Recommended Fixes

  1. 1Inspect all turbo hoses for splits or loose clamps first
  2. 2Replace MAP/boost sensor (~£15-50)
  3. 3Check wastegate and actuator

🛒 Recommended Parts (Amazon UK)

Silicone turbo hose kit~£18-50
View on Amazon UK →
Boost MAP sensor~£15-50
View on Amazon UK →
Hose clamps stainless steel~£4
View on Amazon UK →

Affiliate links — same price for you, we may earn a small commission.

Frequently Asked Questions

Can I clear this code without fixing it?

Yes, but it will return if the underlying issue isn't fixed. Clearing a code only tells you if the problem is permanent or intermittent.

Will this code fail an MOT?

Yes — this code will likely cause an MOT failure. Get it repaired before your test.