RPO Codes

[jakcol997]

Y’all I went to Oreilly’s and they scanned my Yukon.. turns out my service engine soon light is burned out..

P0125
P0155
P0174
P0300
P0404
P0405
P0420
C0235
C0281

ANY suggestions on what it could be or how to fix?

 

[wjburken]

Y’all I went to Oreilly’s and they scanned my Yukon.. turns out my service engine soon light is burned out..

P0125
P0155
P0174
P0300
P0404
P0405
P0420
C0235
C0281

ANY suggestions on what it could be or how to fix?

Wow. What made you get the codes read? Is your truck acting up?

Your title says RPO code. Did you mean OBDII codes?

You have a few areas of codes there.

If I am not mistaken, P0125 is related to coolant temperature

P0155, P0174, P0300, P0404, P0405 & P0420 are related to fuel and exhaust.

Your C codes are related to your ABS system.

 

[jakcol997]

Bahahahah!!! Totally meant OBDII codes! I’m getting crazy low MPG, and suspected my light was burned out!

 

[swathdiver]

Y’all I went to Oreilly’s and they scanned my Yukon.. turns out my service engine soon light is burned out..

P0125
P0155
P0174
P0300
P0404
P0405
P0420
C0235
C0281

ANY suggestions on what it could be or how to fix?

Get yourself a subscription to AllDataDIY for the shop manual. The troubleshooting guide will prioritize which codes to tackle first.