Parts for your 2014 Audi Q5-Temperature sensors

2014 Audi Q5 temperature sensors — what they do and when to replace them

Temperature sensors are absolutely used on the 2014 Audi Q5 (type 8R). Audi’s factory repair information (Elsa/ErWin) and the OEM parts catalogue (ETKA) list the engine coolant temperature sender (often denoted G62), intake air temperature sensor (G42), outside/ambient temperature sensor (G17), and, depending on drivetrain, transmission oil temperature sensing as part of the mechatronics. Diesel variants also employ multiple exhaust gas temperature sensors for DPF control. These components are also referenced across Audi service literature and OBD-II diagnostics via common codes such as P0116–P0119 (coolant temp), P0110–P0113 (intake air temp), and P0070–P0073 (ambient temp), confirming their role in Q5 operation.

On a 2014 Q5, temperature sensors quietly keep everything under the bonnet and in the cabin playing nicely together. They inform fuelling and ignition on cold starts, trigger radiator fans, guide gearbox protection strategies, steer DPF regens on TDI models, and make sure the climate control doesn’t blast hot air on a scorcher. When they drift out of spec, the Q5 can waste fuel, run poorly, or throw a check engine light.

• Common temperature sensors on the 2014 Q5:
  • Engine Coolant Temperature (ECT) sensor for ECU fuelling, idle, and fan control
  • Intake Air Temperature (IAT) sensor for load and spark/fuelling trims
  • Ambient/outside temp sensor for HVAC and display
  • Auto transmission fluid temp sensing (tiptronic/8‑speed)
  • Exhaust Gas Temperature (EGT) sensors on TDI for turbo/DPF protection

There’s no fixed replacement interval, they’re solid-state parts and are serviced as required. If the Q5 is hard to start hot or cold, idles roughly, the fans run at odd times, the A/C behaves strangely, or fuel economy tanks, get the car scanned. Faults like P0116–P0119, P0110–P0113, or P0070–P0073 point straight to sensor or wiring issues.

• Good practice when replacing:
  • Confirm with live data and wiring checks before ordering parts
  • Use quality OE-equivalent sensors and new seals/O‑rings
  • Let the engine cool, capture coolant cleanly, and bleed the system after an ECT swap
  • Torque to spec, don’t use thread tape on sensors that seal with an O‑ring or washer
  • Clear codes and perform basic settings/adaptations if specified by the repair manual

As part of routine servicing, it’s smart to glance at temperature PIDs on a scan tool, check connectors for corrosion or broken locking tabs, and make sure the cooling system is filled with the correct Audi-approved coolant. That little bit of attention helps the Q5 run sweet as and keeps bigger dramas at bay.

Popular questions about 2014 Audi Q5 temperature sensors

How many temperature sensors does a 2014 Audi Q5 have?
It varies with engine and transmission. Every Q5 has at least an engine coolant temp sensor, intake air temp, and an ambient temp sensor. Automatic models add transmission fluid temperature sensing, and TDI variants typically have multiple exhaust gas temperature sensors for DPF control. Expect roughly four to eight temperature-related sensors in total.

What are the signs the coolant temperature sensor is failing?
Common clues include hard starting (hot or cold), high idle, rich running, poor fuel economy, radiator fans running when they shouldn’t, or a check engine light with codes like P0116–P0119. A quick scan of live ECT data versus actual engine temperature will usually confirm whether the sensor or its wiring is the culprit.

Do new temperature sensors need coding on a Q5?
Most don’t. ECT and IAT sensors are typically plug-and-play. Some exhaust gas temperature sensors on diesel models may require basic settings or monitored adaptation after replacement. In all cases, clear fault codes and verify stable readings on a scan tool after the job.