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p21dd
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  1. Gen1 Diesel General Discussion
    I left the repair shop with new pads, rotors and one new caliper. The old caliper had stuck. After I left I noticed the code P21DD (DEF tank heater?). Could they have done something to cause this? The car has 96k.
  2. Gen1 Diesel Technical Discussion
    69K miles and finally went in for the NOx recall. The P21DD for the DEF tank was putting it into derate count down so in it went. Radio blanked out recently and had a slow coolant leak for some time, figured water pump. Car received: -NOx recall and PCM reflash -new DEF reservoir kit -negative...
  3. Gen1 Diesel General Discussion
    Got these two codes this week while on hiway. Check engine lite, def light, countdown came on Took to dealer today since it was on count down to slow limp mode. Right now dealer says it is glow plug module. Had to order part, so hope to get back tomorrow. Hope it is fix. Looking more at...
  4. Gen1 Diesel General Discussion
    So I bring my 14 diesel in for the recall and it's also got the ccel on with the p21dd code. This was a few months ago. So they change the sensor and do the reprogram and the service advisor tells me not to worry about the other code like there is going to be another recall. Well here it is...
  5. Gen1 Diesel General Discussion
    Well add me to the list of emission issues. 44500 miles. P21DD assume that is the DEF tank heater issue. My DEF level is 18%. Kinda sucks, have to travel to Chicago on Monday, guess I will drive a rental car. Think they want to do the recall of the recall whatever that is.
  6. Gen1 Diesel Technical Discussion
    So, I have had zero issues with my 2014 Cruze Diesel for the first 50,000 miles. Yesterday, at ~50,950 the streak was broken. During the final hour of a 600 mile drive, while my wife was driving the car the CEL came on. Once home, I checked it with my hand scanner and got a P21DD (Reductant...
  7. Gen1 Diesel Technical Discussion
    I got the code about 2 weeks ago. Did some looking around this is caused by the urea tank heater. I took it down to Berger Chevy in Grand Rapids. I had them do the NOX sensor recall and this repair as well. The issue IS covered under a special service notice but only to 120,000 miles from the...
  8. Gen1 Diesel General Discussion
    The light popped on yesterday morning. P21DD was its name. 41900 miles. Dropped it off today at the dealer to get fixed along with a oil change. Was really nice having the "special coverage" pay for the repair.
  9. Gen1 Diesel General Discussion
    P21DD & p20B9 The failed DEF tank heater has put the car in reduced power mode, dropping max speed at every 75 miles down to a max of 4mph. The dealer is working on it but these tanks are hard to locate. We'll see how this one goes. These over the top environmental BS controls are killing our...
  10. Gen1 Diesel Technical Discussion
    There are a couple threads with limited info for this code so I figured I would start another to document my experience. 1/3/2016 - Started the car and found the CEL on. Checked code with the scanner and found P21DD. Code reader would not give me further info. Searching found this to be a...
  11. Gen1 Diesel Technical Discussion
    So I finally found a setup that would read my CEL. Turns out is's a P21DD. This code is a DEF tank heater open circuit that's detected by low conductance in the heater. Has anyone else experienced this? Is this covered under warranty considering I just turned 37K miles? I'm thinking it's a...
  12. Gen1 Diesel Technical Discussion
    Hey everyone been a while since I have posted here. Well I'm up to 80k in mileage on my cruze and my check engine light just came on. Since currently I'm 100 miles away from home I felt I little choice but to pay 20 bucks for the onstar protection plan to see what could be up with my cruze. (i...
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