P0330 & P0171 code
09-08-22, 08:11 PM
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2nd gear
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P0330 & P0171 code
Just recently purchased about two months ago has 185k while driving all of a sudden today truck wouldn’t shift out of 3rd gear stuck between 3500-4000 rpm. When I clear both codes with OBD reader it then shifts and drives normally until CEL pops back on. Cleared ecu twice same results. Could bad or dirty MAF or A/F sensor cause knock sensor code ?? Also have to fill up every three days getting around 14 mpg.
09-09-22, 08:27 AM
#2
Just recently purchased about two months ago has 185k while driving all of a sudden today truck wouldn’t shift out of 3rd gear stuck between 3500-4000 rpm. When I clear both codes with OBD reader it then shifts and drives normally until CEL pops back on. Cleared ecu twice same results. Could bad or dirty MAF or A/F sensor cause knock sensor code ?? Also have to fill up every three days getting around 14 mpg.
It happens when there is no signal received by the ECU from the knock sensor between some RPM range
Knock sensor code is higher priority then fuel trim, so do knock sensor diagnosis first. Lots of relevant threads here.
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Wesley39
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