OBD-II B1421 error Codes,PLS ADVICE.

santa_cruzze

Junior Member
Jun 1, 2018
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hi...up!!!....i know this old post...but suddenly my CEL came on while driving..the CEL stays around 5-15 seconds then off..so i took the car for diagnostic..only 1 error code found, it's the a/c solar sensor passenger side..fyi,i just did the timing belt replacement the day before..then this CEL came up...never happen b4 the timing belt change..is it related?....but the a/c still work & still cold..any ideas?
 

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just wanna ask something. i got this cylinder vacuum canister (for brake vacuum)
and i wonder this thing should be put before or after (between servo and valve) the one way valve in the pipes.?

currently it sit before the valve.
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