Changed battery now radio display do not work need code to unlock radio
Hi Robert, I'm AL the owner of Big As Auto Repair.
I look forward helping you with your problem!
Robert, if your radio is a Chrysler radio that came with the vehicle then your problem is not a code issue. Two things may have happened. (1) You may have blown a fuse while replacing the battery. Check all fuses. (2) The Radio was on its last leg and the battery change may have help it go out. Here, one thing you can try if the fuses are good. Pull the radio out and try unplugging and reinstalling the connectors at the back of the radio. Some times this will kick start the radio back to life. If not you'll need a new radio, sorry for the bad news. If you should need further assistance click here. Auto Repair
SOURCE: 05 Gnd Caravan 3.3L - code: P0406
Exhaust gas recirculation sensor A (circuit high)
Obviously the sensor or connection is faulty. I'd try cleaning connection with contact cleaner, add some di-electric grease/lube to the connection, check all vacuum lines if applicable & have code erased, and try it.
SOURCE: Dodge Caravan radio won't work
you need to check fuses on the drivers side dash panel. look for the iod fuse may be 2 unplugg the iod fuse then plug it back in
1. Turn the ignition ON (The radio should display "LOC")
2. Hold down the Radio Presets 2 and 3 buttons for six seconds
3. The
radio display changes from LOC to a three-digit number. Write this
number down. You now have fifteen seconds to complete the next step.
4. Press the AM/FM button
5. The radio display changes to another three-digit number. Write this number to the right of the first one.
6. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05
7. Call 1-800-537-5140
8. Press 1 then # (pound). You'll hear "Invalid Code, try again"
9. Press 139010 or 106010 or 206010 or 202107 then # (pound). You will be asked to enter your four or six digit code followed by *
10. Enter the number from STEP 6 then *
11. Listen to the four-digit number and write it down. It will be repeated twice
12. Turn the ignition ON (The radio displays LOC)
13. Use the MN and HR buttons to enter the code from STEP 11
14. Press the AM/FM button. The radio display changes to "SEC". Your radio is now "un-locked" and usable.
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