no check engine but can it still throw codes?
#1
no check engine but can it still throw codes?
The reason I ask is because I feel my truck is underpowered and I want to see if it has any codes that will help me but it has no check engine light so does that mean there are no codes to throw?
#4
I think that I have seen some codes that have not triggered the ses light. The last one was 'too long to get to closed loop'. Didnt trigger the light but led me to a magenal thermostst. Some codes clear after a fixed number negative post tests Some can only be reset by a scan tool.
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