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Checking fuel tank breather: engine code AWC: VW Sharan I / SEAT Alhambra 1.8 (AJH, AWC)

Step-by-step checking fuel tank breather: engine code AWC for the VW Sharan I / SEAT Alhambra 1.8 (AJH/AWC): 12 steps.

Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.

12 steps 2 engine codes

🧭 Before you start

Fits: VW Sharan I / SEAT Alhambra (7M)

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  • Operate hand vacuum pumpV.A.G 1390 several times. Vacuum must not build up.
  • Operate hand vacuum pumpV.A.G 1390 several times. Vacuum must build up.

🔧 Engine codes this applies to

📋 Procedure

  1. Pull off breather line (3) from activated charcoal filter system solenoid valve 1N80(1).
  2. Connect vacuum testerV.A.G 1368"„connection A“" to activated charcoal filter system solenoid valve 1N80(1).
  3. Connect hand vacuum pumpV.A.G 1390 to vacuum testerV.A.G 1368"„connection B“".
  4. Set vacuum testerV.A.G 1368 to -A/B- position.
  5. Initiate final control diagnosis and select activated charcoal filter system solenoid valve 1N80, 01Performing final control diagnosis.
AJH? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Operate hand vacuum pumpV.A.G 1390 several times. Vacuum must not build up.
  2. Check breather hose (4) on activated charcoal canister for soiling and clean if necessary.
  3. Seal breather hose (arrow) from activated charcoal canister.
  4. Initiate final control diagnosis again and select activated charcoal filter system solenoid valve 1N80, 01Final control diagnosis.
  5. Operate hand vacuum pumpV.A.G 1390 several times. Vacuum must build up.
  6. Check pressure retention valve .
  7. Check breather hose (2) from fuel tank pressure retention valve for leaks.

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.