Code spn521013 shows as permanent, dealer says it's fine.

Nov 21, 2021 #11

neeco74 Bobtail Member

: 7

: 0

: Nov 17, 2021

: 0

msh said: ↑

troubleshooting...
Click to expand...

soooo, the #2 injector harnesses were just recently replaced and problem still persists.. maaybe, even worse than beforehand

neeco74, Nov 21, 2021

#11

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Nov 21, 2021 #12

neeco74 Bobtail Member

: 7

: 0

: Nov 17, 2021

: 0

QUALITYTRUCK said: ↑

Check metal bracket above air compressor that has MCM harness zip tied to it. Cut zip ties and open up plastic loom and look for damaged wires. Can high/low wires seem to be the ones that get damaged most often.
Click to expand...

I'll have to look into this.. much appreciated!

neeco74, Nov 21, 2021

#12

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Code spn521013 shows as permanent, dealer says it's fine.

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Code spn521013 shows as permanent, dealer says it's fine.

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