Checking the Oxygen Sensor Heater (VW Polo 3)

1. Disconnect the four-pin wiring connector from the oxygen sensor 1 (fig. 5.46).

2. Connect a multimeter to measure voltage across terminals 1 and 2 of the wiring connector (Fig. 5.47). Start the engine. Specification: min. 11 V.

2. Connect a multimeter to measure voltage across terminals 1 and 2 of the wiring connector (Fig.…

3. Turn off the ignition. If there is no voltage, check the wiring according to the wiring diagram.

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The text has been checked: Kolesnikov Artem

Previous articles
Checking the oxygen sensor and lambda control
Reading the measured value block and basic settings
Clearing fault memory
Querying fault memory
Connecting the VAG 1551 fault code reader
Self-diagnosis of the injection system

Next articles
Checking the engine operating modes
Checking the coolant temperature sensor
Checking the injector
Checking the inlet air temperature sensor
Installing the ignition distributor
Checking and adjusting the ignition timing angle

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Checking the Oxygen Sensor Heater (VW Polo 3)

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