Parts for your 2016 Audi Q5-Crank angle sensor

2016 Audi Q5 crank-angle-sensor (crankshaft position sensor) — purpose, care and replacement

Based on Audi factory documentation and parts catalogues, the 2016 Audi Q5 does use a crank-angle-sensor. In Audi literature it’s called the crankshaft position sensor or engine speed sender G28. This is documented in the Audi ElsaWin workshop manuals for the Q5 (Type 8R, MY2016) and shown in the Audi ETKA parts catalogue across the 2.0 TFSI, 3.0 TFSI and TDI engines. The diagnostic coverage in Audi service information also lists DTCs P0335–P0339 for this sensor, confirming its role.

On a 2016 Audi Q5, the crank-angle-sensor (crankshaft position sensor/G28) is the engine’s timekeeper. It reads a toothed wheel on the crankshaft and sends precise rotation and position data to the ECU. That lets the ECU fire the spark (on petrols) and schedule fuel injection with bang-on timing, coordinate with the camshaft sensors for proper phase, and manage idle stability, emissions and start-up. It’s also central to misfire detection and engine protection strategies. If it goes out of whack, the engine can be hard to start, stumble, cut out when warm, or trigger the EPC/MIL with relevant fault codes.

It’s not a routine “service item” with a fixed replacement interval. Instead, it’s replaced on condition. During scheduled servicing, a quick visual once-over is worthwhile: check the harness where it runs past the bellhousing/block for chafe or oil contamination, confirm the connector is clean and latched, and make sure no leaks are wicking onto the sensor body. Oil or coolant leaks nearby should be fixed promptly, as contamination can shorten the sensor’s life.

If replacement is needed, the job is typically straightforward but best done with the proper workshop info. On most Q5 engines it’s mounted near the transmission bellhousing at the back of the block (some TDIs place it low on the block). Usual steps include disconnecting the battery, safely raising the vehicle, unplugging the connector, removing the single retaining fastener, and withdrawing the sensor without levering on the block. Fit a quality OEM-spec sensor with a new O-ring, lightly lubricate the seal, and route the harness in the factory clips away from heat and moving parts. Torque the fastener to the workshop manual specification. After installation, clear fault codes and perform any basic settings or adaptations if prompted by the scan tool, many Q5s will relearn automatically after a short drive cycle.

• Common symptoms: long crank/no start, intermittent stalling when hot, rough idle, loss of power, EPC/MIL on with P0335–P0339.
• Good practice: scan first, inspect wiring, verify power/ground/signal at the connector, and confirm engine mechanical timing is correct.

Popular questions about 2016 Audi Q5 crank-angle-sensors

Where is the crank-angle-sensor located on a 2016 Audi Q5?
On most petrol Q5s it sits at the rear of the engine near the transmission bellhousing, reading a tone wheel on the crank. Many TDI variants place it low on the block. Access is usually from underneath with the undertray off. Always verify the exact spot by engine code in a workshop manual.

What are the tell-tale signs the crank-angle-sensor is failing?
Expect extended cranking, sudden stalling once warm, rough running and the EPC or check engine light. Scan tools commonly show P0335–P0339. Because similar symptoms can come from wiring faults, it’s smart to test the loom and connector before condemning the sensor.

Does the crank-angle-sensor need servicing or a scheduled replacement?
No fixed interval applies. It’s replaced if faulty. During routine servicing, a quick inspection for oil contamination, damaged wiring or loose connectors is enough. Keeping leaks in check and heat shields intact helps the sensor live a long, drama-free life.