ShearerLuck1975
BMW 5 Series Insufficient Cooling/Heating Issue
Summary of the thread
A 2013 BMW 5 Series is experiencing insufficient cooling and heating, with a diagnostic code 20A701 indicating the water pump output is out of tolerance. Possible causes include a faulty water pump or a malfunctioning sensor, despite coolant and oil temperatures appearing normal. Solutions suggested involve checking the water pump for defects and ensuring all sensors are functioning correctly.
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2 comment(s)
CarlyMechanic
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Wondering if this could be a sensor giving a faulty output. Or is this the water pump itself.? The coolant temperatures and oil temperatures and everything say they're fine and I've already changed the temperature sensor for the coolant.
It's possible that the issue is with the water pump itself, especially if the diagnostic code specifically points to it. Start by checking the electrical connections to the water pump for any corrosion or loose connections. If everything looks good, it might be necessary to inspect the water pump for any signs of wear or failure. If you're unsure, it's best to have a professional mechanic take a look, as a malfunctioning water pump can lead to engine overheating. Let me know how it goes or if you have any further questions!
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BMW
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5
ShearerLuck1975 (community.author)
Wondering if this could be a sensor giving a faulty output. Or is this the water pump itself.? The coolant temperatures and oil temperatures and everything say they're fine and I've already changed the temperature sensor for the coolant.