Bleeding fuel system - engine codes CAMA, CAMB, CCWA, CCWB, CGKA, CGKB, CCLA — AUDI

🧭 Before you start

Fits: Audi A5 (8T, 2007–2016), Audi A5 Cabriolet (8F), Audi A4 B8 (8K, 2007–2015)

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• After installation, the high-pressure pump must first be filled with fuel before the engine is started (the pump must NOT be allowed to run while still empty). — Connect a vehicle diagnostic tester.
• To repeat basic setting, switch ignition off and on once. Then start basic setting again.
• If there is any air left in the fuel system, the engine may switch to the backup mode ('emergency running' mode) during the road test. Switch off the engine and erase the event memory. Then continue the road test.

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ After installation, the high-pressure pump must first be filled with fuel before the engine is started (the pump must NOT be allowed to run while still empty). — Connect a vehicle diagnostic tester.
2. Switch on ignition.
3. Select "“Engine electronics”" in vehicle self-diagnosis.
4. Then select "“Basic setting”".
5. Select "“Checking fuel system pressurisation pump”" from the list.

6. Press "“start”" button.
7. The fuel pumps start running.
8. The fuel pump must run for approx. 3 minutes to ensure that the fuel system is filled sufficiently with fuel. [Note: To repeat basic setting, switch ignition off and on once. Then start basic setting again.]
9. Start engine after filling fuel system.
10. Run engine at moderate speed for several minutes and then switch off.
11. Check fuel system for leaks.
12. Erase entry in event memory using diagnostic tester.
13. After completing the repair, road-test the vehicle. Accelerate with full throttle at least once. Then check the high-pressure section of the fuel system again for leaks. [Note: If there is any air left in the fuel system, the engine may switch to the backup mode ('emergency running' mode) during the road test. Switch off the engine and erase the event memory. Then continue the road test.]
14. Interrogate event memory again.

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