S-10 engine code issues
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S-10 engine code issues
P1621 code...ECM is unable to read long term memory - EEPROM
It came up when I left work at 4pm and went to auto zone to get it read. I got up the next morning it was gone. but now my gas milage is horrible. What can I do or do I just need to replace the ECM.
It came up when I left work at 4pm and went to auto zone to get it read. I got up the next morning it was gone. but now my gas milage is horrible. What can I do or do I just need to replace the ECM.
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Vinna
Express, Savana & G-Series Vans
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Nov 12, 2012 8:51 AM
