My trucks pulling a lean code ??
My 2000 burb with 200,000 miles just kicked a check engine light and its a lean bank 1 code ??? anyone ever get this ??
Forum Discussion
if you truck has an upstream O2 sensor and a downstream O2 sensor.. you will not get a lean burn code and it being a 02 sensor. as one is checked off the other one. when engine is started COLD.
as the converter does no work cold. so exhaust in is the same as exhaust out.
but it could be a dirty mass AIR flow sensor.. clean it first.. otherwise replace.
as the converter does no work cold. so exhaust in is the same as exhaust out.
but it could be a dirty mass AIR flow sensor.. clean it first.. otherwise replace.
