Multiple codes all of the sudden

[JReichenbach]

Hi, Purchased a 2013 ram a few months ago with 137,000 miles. took a 100 mile trip this pm and CEL came on, 5 codes;
D059F
P020C
P020B
U059F
P026B
Truck ran fine, any thoughts? Jim

 

[Wiredawg]

Have you looked up the codes to see what they mean? That would be a good start.

Cheers, Ron

 

[TJJEEPER]

Well, just browsing those codes, I'd look to see if you had a rodent chewing on your wiring. Took about 10 minutes to search out several code lists... and not all of them agreed.
P020B and C are injector issues
I couldn't find the others easily...

Google returned several lists

 

[Jim W]

Did you check the LH side of the home page and look up RAM'S Diagnostic trouble Codes.
Here is one that is listed.
U059F - Invalid Data Received From NOx Sensor B
Could you have misread the D-059F and really be another U059F. As I did not see any codes that listed a D at the begging of the DTC. The begging letters are B, P, C and U for DTC's. If Zero is First digit after the letter, it is an SAE - Generic code, that is used by all automakers that is common to all makes and models of vehicles.

The other code P026B could be for the oxygen (02) sensor having issues.
The other two codes are for the #3 and #2 injectors having issues.

 

[JReichenbach]

Hi, Purchased a 2013 ram a few months ago with 137,000 miles. took a 100 mile trip this pm and CEL came on, 5 codes;
D059F
P020C
P020B
U059F
P026B
Truck ran fine, any thoughts? Jim

I just have an old Acton code reader and some of the codes were pending. I had just run truck thru car wash with an underbody sprayer. The D059F code came up one other time when I let truck idle for an hour in real cold weather. No mice in my garage! I deal with enough of them out here in oil patch buildings. I’ll check connections under hood, maybe go thru and dielectric grease them. The truck has 2 NOX sensors, one at elbow behind turbo and one way back behind second catalyst? Could the 2 different codes be specifying both sensors? Thanks for tips! Jim