Last post on Dec 03, 2011 at 7:50 AM
You are in the Toyota RAV4
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Toyota RAV4, SUV
#2127 of 2127 toyota rav4 check engine
Dec 03, 2011 (7:50 am)
we recently bought a 2003 Toyota Rav4 with a 2.0. It had some issues when we bought it but we hope we can fix them. We changed the spark plugs and the coils on the spark plugs. Now when we hook it up to the diagnosic test it says AIR/FLUID SENSOR HEATER RESPONSE MALFUNCTION, AND AIR FLUID SENSOR HEATER CIRCUIT MALFUNCTION. Any ideas on what might fix this before we dump a lot of money into it?