HELLO GUYS I HAVE A QUICK QUESTION WHATS CODE 232 AND 212 I SSPRAIED THE INTAKE MANIFOLD WITH CARB CLEANER WHILE MONITORING THE HO2 S SIGNAL WITCH STAYS A O.OV AND MADE NO DIFFERENCE. I DO HAVE 12V TO THE HO2S BUT IS NOT SWICHING AT ALL I KNWO I DONT HAVE VACUM EAKS AND THE FUEL PRESSURE IS WHITIN SPECS. COULD OF BE A FAULTY MAF SENSOR THE ONE ITS GOT NOW IS A USED ONE FROM A 89 240 MINE IS A 93 240 ANY INPUT IWILL APRECIATE THANKS AGAIN. THIS IS A VERY TROUBLESOME CODE

 

232 is long term fuel trim
212 is O2 sensor signal missing.