Parts for your 2019 Audi Q5-Camshaft sensor

2019 Audi Q5 camshaft sensor — what it does and when to service it

The 2019 Audi Q5 does use camshaft position sensors. Audi’s erWin workshop manuals for the FY-platform Q5 (2018–2020) and Audi Self‑Study Programme material for the EA888 2.0 TFSI and EA839 3.0 TFSI engines describe Hall‑effect camshaft sensors (commonly designated G40/G163 and related IDs) that the engine control unit relies on for sequential injection, ignition timing, and variable valve timing/valvelift control. Diesel variants likewise employ camshaft sensing in their EDC/MD1 engine management. That means a camshaft sensor is absolutely relevant on a 2019 Q5.

On a 2019 Audi Q5, the camshaft sensor’s main job is to tell the ECU exactly where the cam(s) are relative to the crank. That precise “phase” info lets the car fire each injector and coil at the right moment, smoothly adjust valve timing for power and economy, and light off cleanly from cold. If the signal goes missing or messy, the Q5 can suffer long cranking, rough idle, flat spots, poor fuel economy, and an EPC or Check Engine light. You’ll often see fault codes like P0340/P0341/P0345 types stored.

Sensor count and position vary by engine: the 2.0 TFSI typically runs one or two sensors on the cylinder head, while the SQ5’s 3.0 TFSI V6 has a sensor on each cam. Either way, they’re designed as fit‑and‑forget parts, not a scheduled replacement item. During regular servicing, it’s smart to give them a quick once‑over: check the connectors for corrosion, make sure the wiring under the engine cover isn’t chafing, and keep an eye out for oil weeping around the sensor’s O‑ring. Good oil and on‑time changes help the whole timing and valvelift system stay happy, which reduces sensor grief down the track.

If replacement’s on the cards, it’s a straightforward driveway job for many owners: disconnect the plug, remove the single retaining fastener, ease the sensor out, swap the O‑ring, lightly oil the new seal, and refit. Clear any codes and, if prompted by a scan tool, run the basic settings/adaptation so the ECU learns the new signal cleanly. If a fresh sensor doesn’t resolve persistent cam correlation faults, it’s time to look deeper — wiring integrity, reluctor wheels, or timing chain alignment can also be culprits. For the V6 with multiple sensors, confirm exactly which cam bank is flagged before ordering parts. No need to overthink it — a quick scan, a sensible visual check under the bonnet, and the right quality OE‑spec sensor usually has the Q5 back to its crisp, Aussie/Kiwi‑spec smoothness.

• Common clues it’s failing: long crank, rough idle, limp mode, higher fuel use, and cam/crank correlation fault codes.
• Service tip: inspect connectors and loom at each major service (around 15,000–30,000 km), especially after any oil leaks or engine work.

FAQs

Where is the camshaft sensor on a 2019 Audi Q5?
On the 2.0 TFSI it’s fitted on the cylinder head near the timing end, some versions have an intake and an exhaust cam sensor. The SQ5’s 3.0 TFSI has one per cam (four total), mounted on the front or rear of each cylinder head. A torch and a quick look under the engine cover will usually spot the plug and small retaining bolt.

What are the symptoms of a bad camshaft sensor on this model?
Expect longer cranking, a shaky idle, misfire feel, reduced power, worse fuel economy, and an EPC/Check Engine light. Scan tools often show P0340/P0341/P0345‑style codes. If the issue is intermittent, gently wiggle the connector and loom with the engine idling — a stumble points to wiring.

Do camshaft sensors need regular replacement?
No — they’re not a scheduled item. Replace only when faulty or contaminated by oil/coolant. Use a quality OE‑equivalent sensor, renew the O‑ring, and clear/adapt via a scan tool for the best result.