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Post by bevdiesel on Oct 13, 2022 16:41:43 GMT -6
P0601 pcm memory error
P1599 power management mode or engine stall
P1621 pcm eeprom memory performance
P1639 5v reference "B" or low TCM FAULT
P1860 torque converter clutch PWM solenoid circut
Any help would be appreciated I have no idea where to start
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Paulaurora
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Post by Paulaurora on Oct 13, 2022 19:50:59 GMT -6
all those can be related P0601 pcm memory error P1599 power management mode or engine stall P1621 pcm eeprom memory performance P1639 5v reference "B" or low TCM FAULT resolution bellow might help if everything ok there than you need new PCM.   |
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Paulaurora
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Post by Paulaurora on Oct 13, 2022 19:57:59 GMT -6
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Post by AUROD X on Oct 13, 2022 22:13:29 GMT -6
WOW! All that, can you just disconnect the Battery then reconnect after 10secs and go from there. Is a Start, Just saying.🤔
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Post by bevdiesel on Oct 14, 2022 9:13:48 GMT -6
None of this helped I'm not understanding where to start
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Paulaurora
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Posts: 3,828
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Post by Paulaurora on Oct 14, 2022 16:40:48 GMT -6
Check the PCM make sure there is no water there. Check all the ground points etc.
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Post by AuroraGirlFromMars on Oct 21, 2022 6:26:12 GMT -6
Sounds like your transmission is in "limp" mode which if I recall is 2nd gear. on a 4t80e. 3rd gear on a 4t65e.
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Post by AuroraGirlFromMars on Oct 26, 2022 8:01:12 GMT -6
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