Invalid Key Code

2007 DODGE RAM
150,000 MILES • 4.7L • V8 • 4WD • AUTOMATIC
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MICHAEL RAINEY JR
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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.
Sep 21, 2022 at 7:42 PM
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JACOBANDNICKOLAS
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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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Sep 27, 2022 at 7:06 PM
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MICHAEL RAINEY JR
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Here are the codes I got. And no, I do not have a spare key for it.
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Oct 8, 2022 at 2:11 PM
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JACOBANDNICKOLAS
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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
Oct 8, 2022 at 9:21 PM
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MICHAEL RAINEY JR
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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.
Oct 8, 2022 at 9:52 PM
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JACOBANDNICKOLAS
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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
Oct 9, 2022 at 4:06 PM