Removing and installing sender 1 for turbocharger speed G688 — VW
Removing and installing sender 1 for turbocharger speed G688 on VW: 12 steps, engines CKDA. 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 Touareg II (7P, 2010–2018)
🔧 Engine codes this applies to
📋 Procedure
- Remove front right wheel 44.
- Remove engine cover .
- Place wiring harness at air filter housing to one side (arrow).
- Unclip breather hose (if there is one) for front differential from air filter housing (arrows).
- Remove upper part of air filter on right.
- Disconnect electrical connector (5).
- Remove bolt (1).
- Release hose clips (2) and (4) and take out air pipe on right.
- Disconnect electrical connector (1).
- Install air pipe .
- Install upper part of air filter.
- Mount front wheel 44.
Other VW procedures
- Removing and installing mounting plate for engine oil cooler, pressure regulating valve for crankcase breather system and oil filter housing
- Removing and installing right engine support – VW Touareg II
- Removing and installing catalytic converter on right – VW CKDA
- Removing and installing pressure differential sender G505 or pressure differential sender 2 G524
- Removing and installing engine control unit J623 and engine control unit 2 J624
- 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
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.