had 2014 chevy 1500 injectors cleaned next day engine light comes on

Asked by May 21, 2017 at 04:50 PM about the 2014 Chevrolet Silverado 1500 LT 4WD Z71

Question type: Maintenance & Repair

had my fuel injectors cleaned next day engine light comes on had read out says
catalytic converter

3 Answers


a semi new car and you had the injectors cleand? i ask because was there a issue before had...or was something about to fail.. but what code thers like 25 cat codes????

Error code is P0420 ( bank1 ) Hope this helps


IM THINKING THAT WHEN THE INJECTORS WERE CLEANED IT WAS OVER DONE OR TO MUCH PRODUCT WITCH HARMED THE CAT..DRIVE IT UNTILL THE CAT GETS GOOD AND HOT MIGHT CLEAN OUT.. AND / OR ..This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). Catalytic converters are not normally a "wear" type item, that is they are not designed to wear out and need replacement. If they have failed, it is likely due to something else that caused it to fail. This is what a P0420 means... Leaded fuel was used where unleaded was called for (unlikely) A damaged or failed oxygen / O2 sensor Downstream oxygen sensor (HO2S) wiring damaged or connected improperly The engine coolant temperature sensor is not working properly Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe Failed or underperforming catalytic converter (likely) Retarded spark timing The oxygen sensors in front and behind the converter are reporting too similar of readings Leaking fuel injector or high fuel pressure Cylinder misfire Oil contamination

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