Parts for your 2015 Audi Q5-Camshaft sensor

2015 Audi Q5 camshaft-sensor — what it does and when to replace it

The camshaft-sensor is absolutely relevant on the 2015 Audi Q5. Audi factory service information (Elsa/ERWIN workshop manuals), the Audi/VW Self-Study Programmes for the EA888 2.0 TFSI and the V6 TDI/TFSI engines, and the Audi/ETKA parts catalogue all show Hall-effect camshaft position senders (often labelled G40/G300) fitted to these engines. The sensor feeds the engine control unit precise cam angle data for variable valve timing, sequential fuel injection, and smooth starts, so it’s very much part of the show on a 2015 Q5.

In simple terms, the camshaft-sensor tells the ECU which stroke each cylinder is on. Matched with the crank sensor, it lets the Q5 fire injectors and spark (on petrol models) at exactly the right moment. It also helps the ECU control Audi’s cam phasing hardware, trimming valve timing for power, economy, and clean emissions. If the signal goes missing or skew-whiff, expect harder starting, rough idle, lazy throttle response, and a dash light. Common fault codes include P0340–P0344 and cam/crank correlation codes.

It’s not a scheduled “service” item, but it does live under the bonnet where heat, oil mist, and vibration can take a toll. Good practice during routine servicing of a 2015 Q5 includes:

• Visual checks of the sensor body and connector for oil ingress, cracked insulation, or a loose clip.
• Confirming loom routing isn’t rubbing on covers or sharp edges.
• Using the correct spec engine oil to minimise vapour and sludge that can creep into connectors.

Replacement is straightforward for a competent tech: scan for codes and live data, verify power/earth/signal at the plug, and if the sensor is confirmed crook, remove the retaining fastener, swap the unit and O-ring, and refit the connector. Always tighten to factory spec and clear codes afterwards. On many Q5s the ECU will relearn cam/crank correlation after a short drive cycle, a scan tool can speed this up.

Use an OE-quality sensor, cheap knock-offs can introduce noisy signals that cause intermittent dramas. If the car’s clocking higher kilometres or has had oil leaks in the cam cover area, it’s worth being proactive—catching a failing camshaft-sensor early prevents stalling or limp-home behaviour that can ruin a weekend away.

• Where is the camshaft-sensor on a 2015 Audi Q5?
  On the 2.0 TFSI it’s mounted at the front or rear of the cylinder head near the cam pulley area, on the V6 TDI/TFSI there are typically sensors on each bank, positioned at the ends of the cylinder heads. Access varies with engine cover and intake plumbing, but it’s usually a single-bolt retained Hall sensor with a three-pin plug.
• Can you keep driving with a dodgy camshaft-sensor?
  It may run, but starting can be slow and the engine may fall back to a safe strategy with reduced power and higher fuel use. Prolonged driving like this isn’t ideal—get it scanned and sorted to avoid getting stranded.
• What does replacement typically cost in AU/NZ?
  Ballpark, an OE-quality sensor is often in the AUD/NZD $80–$220 range, plus 0.5–1.0 hours labour depending on engine and access. If wiring repairs are needed, expect a bit more time on the clock.