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Monza Speedometer Warning Light and Oil Pressure Lamp

My 2021 Chevrolet Monza with a gasoline engine is showing a speedometer warning light and error code, plus the oil pressure lamp is on at 38655 kilometers. I suspect a sensor issue, maybe the engine oil temperature sensor cable or plug. Any ideas?

A 2021 Chevrolet Monza displayed a speedometer warning light, error code, and oil pressure lamp at 38,655 kilometers. The issue was suspected to be related to the engine oil temperature sensor, possibly due to a faulty sensor cable or plug. A suggestion was made to check the sensor's resistance and grounding connections, as corrosion could be a factor. The problem was resolved by fixing a bad connection in the sensor circuit, costing 95€.

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4 comment(s)

Hey, I had similar issues with my Monza. Same warning light and error code. Have you checked the resistance of the sensor itself? It could also be a faulty ground connection. Sometimes those connectors get corroded.

Thanks for the insight. Could you tell me where that grounding point might be? Where should I look?

Yep, it sounds like the temp sensor. I'd just take it to a workshop and have them check it out. It ended up costing me around 95€ to get sorted when the cable to the sensor had failed.

Thanks for the help. I took it to a technician, and it was a bad connection in the engine oil temperature sensor circuit, just like you said. Cost me 95€ to fix. Problem solved.

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CHEVROLET

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MONZA