2015 Duramax P21Dd Error Code at itulimainiblog Blog


2015 Duramax P21Dd Error Code. Then i took an obd tool and cleared it after a while and then it. Hello i have a 2015 3500 durmax diesel ltz 4x4.

I have a 2014 6.6l duramax with codes c0131, p128e and p21dd. the p128e
I have a 2014 6.6l duramax with codes c0131, p128e and p21dd. the p128e from www.justanswer.com

My code light came on p21dd , so is it the heater for the def? That’s the dtc code for the def tank heater. Then i took an obd tool and cleared it after a while and then it.

I have a 2014 6.6l duramax with codes c0131, p128e and p21dd. the p128e

My code light came on p21dd , so is it the heater for the def? Mine did the same thing and drove it for a while (a couple weeks). My code light came on p21dd , so is it the heater for the def? This code sets when the computer detects the heater circuit is open which normally leads to the heater itself being faulty.