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simonmoore1

Skoda Praktik Oxygen Sensor Issue

My 2008 Skoda Praktik with a gasoline engine is showing an oxygen sensor heater failure. Mileage is low, 24135 km. The check engine light is on, and I'm getting higher fuel consumption. Error memory points to the O2 sensor. Could a defective cable or plug connection be the cause?

Summary of the thread

A 2008 Skoda Praktik is experiencing an oxygen sensor heater failure, indicated by a check engine light and increased fuel consumption. The issue may be due to a defective cable or plug connection rather than the sensor itself. It is suggested to inspect the wiring and connector for corrosion or damage, as these are common causes of such failures. If the problem persists, professional inspection of the wiring harness back to the ECU is recommended.

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4 comment(s)

annalehmann1

O2 sensor heater failure, huh? Seen that before on a few Skodas. The increased fuel consumption and malfunction indicator light are classic signs. Before replacing the sensor, definitely check the wiring and connector. A faulty connection can cause the same symptoms and save you some money.

simonmoore1 (community.author)

Thanks. When you say check the wiring, what am I specifically looking for? Is there a common spot where the cable usually fails?

annalehmann1

Yeah, the connections on those are known to corrode, messing with the air-fuel ratio and vehicle emissions. If wiggling the connector doesn't do anything, get it to a workshop and have them check the exhaust system's wiring harness back to the ECU. Better safe than sorry when it comes to vehicle emissions.

simonmoore1 (community.author)

Right, will do that. Thanks for confirming it's likely the connection. I'll report back after the repair. Cost me 95€ in the end.

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SKODA

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PRAKTIK