What does p21dd mean on a check engine light?
What does p21dd mean on a check engine light?
Upon cold start the check engine light came on with code P21DD. After a little reading I learned that this can result in “Limp Mode”. I was in the middle of nowhere in Northern Wyoming. Not cool! I drove down to Denver and replaced it that week. I shot this video of the repair….. It would only result in LIMP mode if the main tank heater failed.
When does the Check Engine light turn off?
The Check Engine Light will turn off if all error codes are cleared. Some scan tools have many capabilities such as freeze frame that notes some sensor readings when a code was set and removing the codes will also remove this file.
How to reset check engine light with OBD-II?
1 Connect the scan tool to the OBD – II Connecting the scan tool to the OBD- II ( On- board diagnostic connector) under your steering column. 2 View error codes by pressing the “READ” button Pressing the “READ” button on the scan tool to see the error codes of the engine. 3 Remove the error code
Why is my 2013 LML throwing a p21dd code?
My 2013 is at 53,000 miles,3,000 past emissions warranty. We’ve started getting colder mornings and its started throwing a P21DD code. Based on a search. It appears to be a DEF tank heater issue, but I can’t find much info about it. Is the tank heater hard to replace? Where can I find the part number? Any help is appreciated.
Upon cold start the check engine light came on with code P21DD. After a little reading I learned that this can result in “Limp Mode”. I was in the middle of nowhere in Northern Wyoming. Not cool! I drove down to Denver and replaced it that week. I shot this video of the repair….. It would only result in LIMP mode if the main tank heater failed.
What is the p21dd code on my Chevy Duramax?
I have reset it. The check engine light comes on when I accelerate aggressively. It show two codes P21DD and P21DD with small PD above the last D. I am able to reset the code each time. Mechanic’s Assistant:What is the model of your ’15 Chevy?
Why do I get error code p21dd on my car heater?
It’s likely that the heater that the code pertains to is faulty – at the dealer we would use the scan tool to monitor the amperage drawn by the heater in question and compare it specs. Can’t open SI on my phone or I’d say what that is. I wouldn’t just replace the part without actually testing though. Found this.
My 2013 is at 53,000 miles,3,000 past emissions warranty. We’ve started getting colder mornings and its started throwing a P21DD code. Based on a search. It appears to be a DEF tank heater issue, but I can’t find much info about it. Is the tank heater hard to replace? Where can I find the part number? Any help is appreciated.
