Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSAUDI2010A3 2.0T, 2.0 E, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (3.2L - GENERIC SCAN TOOL - ENGINE CODE(S): BUB)ST GENERIC SCAN TOOLDESCRIPTION AND OPERATIONMOTRONIC FUEL INJECTION SYSTEMENGINE COOLANT TEMPERATURE SENSOR, CHECKINGTESTING IF DISPLAY IS APPROX. - 40.0° C

2010 Audi A3 2.0T, 2.0 E, Standard

Testing if display is approx. - 40.0° C

2010 Audi A3 2.0T, 2.0 E, StandardSECTION Testing if display is approx. - 40.0° C

WARNING: This page is about a different car, the 2007 Audi A3 and 2006 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

-- Disconnect the Engine Coolant Temperature (ECT) Sensor -G62- electrical harness connector -1-.

Fig 1: Identifying Engine Coolant Temperature (ECT) Sensor (On Radiator) Electrical Harness Connector

Courtesy of AUDI OF AMERICA, LLC

-- Using a jumper wire, connect the Engine Coolant Temperature (ECT) Sensor -G62- electrical harness connector terminals 1 to 2.

-- Check the value indicated on the scan tool display.

Fig 2: Identifying 2-Pin Electrical Connector & Terminals

Courtesy of AUDI OF AMERICA, LLC

If the value jumps to approx. 140.0° C

-- End diagnosis and switch the ignition off.

-- Replace the Engine Coolant Temperature (ECT) Sensor - G62-.

If indication remains at approx. -40.0° C:

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.