Removing and installing tank pressure sensor G400, Touran — VW
Removing and installing tank pressure sensor G400, Touran on VW: 11 steps, engines CDGA. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Touran I (1T, 2003–2015), VW Passat B6 (3C, 2005–2010), VW Passat B7 saloon (362, 2010–2014), VW Passat B7 Variant (365, 2010–2014)
🔧 Engine codes this applies to
📋 Procedure
- Observe safety precautions .
- Observe rules for cleanliness .
- Observe safety precautions when working on natural gas system .
- Detach exhaust hanger (1), and loosen clamp (2).
- Remove exhaust pipe.
- Remove protective covers on underbody Fuel supply system – natural gas engines20Fuel tank; Assembly overview - fuel tank.
- Release and unplug connectors (1).
- Close mechanical shut-off valves (2) on all natural gas tanks using hand wheel T50026.
- ⚠ Release pressure in the system before working on the natural gas system. — Release pressure in high-pressure line Fuel supply system – natural gas engines20Fuel tanks; Releasing pressure in high-pressure line.
- Disconnect battery Electrical system27Battery; Disconnecting and reconnecting battery.
- Release and disconnect connector (1) from tank pressure sensor G400.
Other VW procedures
- Removing engine · 41 torque figures
- Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
- Adjusting valve timing – VW Passat B5 · 83 torque figures
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
- Removing and installing coolant pump · 53 torque figures
- Balancing wheel, balancing wheel on stationary wheel balancer · 4 torque figures
- StarterB for vehicles with 1.0l, 1.6l and 2.0l engines (ARA, BAH, BPA, CCRA, BBX, CFEA) · 4 torque figures
- Installation position, gear wheel for 3rd gear · 2 torque figures
- Compression - check · 4 torque figures
- Reservoir for the windscreen and rear window washer system - remove and install · 4 torque figures
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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.