What does the P2263 OBD-II code mean?

The turbo or supercharger uses exhaust pressure and an air/fuel mixture to create the boost. The generic P2263 trouble code triggers when a performance issue with the turbo/supercharger boost system materializes, and there is a detected difference in exhaust pressure from the manufacturer’s predetermined threshold (be it lower or greater).

How serious is the P2263 code?

This OBD-II diagnostic code is considered serious as the vehicle may stall and shut off whilst driving. The car may also be challenging to drive, so limiting driving until diagnosis and repair are essential. 

What are the common symptoms of a P2263 trouble code?

When a P2263 OBD-II code is triggered, you may expect the following symptoms:

  • Check Engine light illuminates 
  • Lack of engine power/poor acceleration
  • Low boost pressure
  • Unusual noises from the engine and/or turbo/supercharger
  • The engine may stall and shut off when driving

What are the causes of a P2263 diagnostic code?

There are many reasons for the P2263 fault code to appear. However, the most common causes are:

  • Defective turbocharger (common)
  • Broken vacuum hoses or loose hose clamps
  • Defective boost pressure sensor
  • Faulty injection pressure control (IPC)
  • Faulty exhaust back pressure sensor
  • Wastegate failure 
  • A leak in oil supply lines

How to diagnose a P2263 OBD-II code?

Using an OBD-II scanner or booking a diagnostic check with a trusted mechanic or garage is the easiest way to diagnose a P2263 OBD-II fault code. Following the diagnostic steps fully and correctly is essential for accurate diagnosis:

  • Scan your system for other OBD-II codes. If present, these must be resolved first.
  • Clear the fault codes, followed by a test drive of the car while reading the live data on an OBD-II scanner.
  • If the code persists, check for damaged hoses or loose connections.
  • Inspect the oil supply line for leaks.
  • Check the wastegate for proper movement by manually opening and closing it.
  • Check the boost sensor, exhaust pressure sensor, and injection pressure control (diesel) to ensure they are all working correctly.
  • Check the turbocharger for oil (it will need to be removed to inspect it properly). 
  • Inspect the turbo shaft for excessive wear or looseness.
  • Inspect the turbocharger on the exhaust side for any obstructions.

How to fix a P2263 OBD-II trouble code?

It’s advisable to test drive the car after each check/work is processed to see if the error code clears. If the code returns, move on to the next repair. 

Confirm the code with an OBD-II scanner, and reset the diagnostic code. Follow this up with a test drive of the vehicle to see if the fault code clears. If it returns, the following repairs are the most common to resolve a P2263 code (in no particular order):

  • Replace faulty turbocharger
  • Repair or replace vacuum