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U0401 code

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Old May 8, 2020 | 10:59 PM
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From: perth
Default U0401 code
Hi 2008 Mazda 2 with engine code U0401
Engine control module I think just communication error.
Any body else any views?

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Old May 9, 2020 | 04:38 AM
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U codes are usually just communication codes and 99% of the time nothing to worry about. What issues / fault do you have?
 
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Old May 9, 2020 | 10:16 PM
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From: perth
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It drives fine just engine check light on intermittently.
 
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Old May 10, 2020 | 06:06 AM
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When did the car last go to Mazda for a PCM software update?
 
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