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Invalid Key Code

Tiny
MICHAEL RAINEY JR
  • MEMBER
  • 2007 DODGE RAM
  • 4.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
How do I get the invalid key code taking off. I have the factory key for the truck. I rebuild the engine and that coded came up. I do have a scanner tool that can reprogram keys. The scanner I have is LAUNCH OBD2 Scanner CRP909X. How do I go about using it the reset the code.
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Wednesday, September 21st, 2022 AT 7:42 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi:
As far as the issue, it should have set a B1A25 code. It could need programmed, but that shouldn't be the case. Do you have a spare key to try? When you replaced the engine, could there have been grounds damaged or anything left disconnected?

Here is what I suggest. I attached the diagnostics below for the aforementioned codes. Part of the diagnostics includes reprogramming the key/skreem. I am not familiar with the scan tool you have, but pics 7 and 8 are the procedure for reprogramming the skreem. The last pic explains how to program a key.

I hope this helps. Let me know.

Take care,

Joe

See pics below.
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Tuesday, September 27th, 2022 AT 7:06 PM
Tiny
MICHAEL RAINEY JR
  • MEMBER
  • 4 POSTS
Here are the codes I got. And no, I do not have a spare key for it.
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Saturday, October 8th, 2022 AT 2:11 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

Wow! That is a long list. Does anything listed work correctly? Based on what I see, I question if the key is the issue. Have you checked connectors at different modules? For example, the body control module.

Let me know.

Joe
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Saturday, October 8th, 2022 AT 9:21 PM
Tiny
MICHAEL RAINEY JR
  • MEMBER
  • 4 POSTS
No, I have I don't have any of the lights like the headlight or taillights plugged in nor do I have the o2 sensors plugged in the only sensors plugged in are the ones to the engine and transmission.
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Saturday, October 8th, 2022 AT 9:52 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Interestingly, there are so many, I'm not sure where to start. I can't be certain, but it appears the PCM may have failed.

Joe
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Sunday, October 9th, 2022 AT 4:06 PM

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