99 Rodeo -- OBD code P1627

[Dennosmith]

Does anyone know what this code is? I looked it up and it means
"PCM A/D Conversion Malfunction." What is this and how do I fix it? Please help....

[paulsantangelo]

It could just mean that your code reader does not function with the ECM. Can read the codes!

--just a thought!

[paulsantangelo]

It could just mean that your code reader does not function with the ECM. Cant read the codes!

--just a thought!

[rodeo02]

Denno- I'm guessing that code means "analog to digital conversion". I've never seen that one come up! do you have any other symptoms? How old is your battery? I know our zu's are super sensitive to proper charging system output (needs a steady 14v with truck running). The only other things I can think of is check all the ground connections. G/luck! keep us posted.
Joel

[bfn311]

were you able to fix the problem. I have the same code.

[Dennosmith]

I had the PCM replaced--tied to another problem...but still have the code. I think it is tied to the fuel sending unit. When my CEL come on after my fuel gage acts all wierd, I get the P1627 code. When the CEL goes off and I clear my code, I don't see it again until the fuel gage acts up again.....

[2eyefishclaw]

if p1627 is set there should be another DTC for Dennosmith it will be (P0463 fuel level sensor high input) you need a fuel sending unit. Not all code readers do a very good job of code reading take it to your dealer parts are $45 and labor should be 2.5 hrs or do it yourself its not hard

[jimmypodunk]

I have a 2001 rodeo sport with the following codes. P1627, P0463. The fuel guage acts all wierd and goes to empty when it's nearly full and I get a fuel low light along side with it. I plan to change the fuel tank sending unit. If it clears the P1627 code I'll follow up and post something here.

Other codes I have that I think are unrelated are P0402 EGR, and P0128 coolant thermostat.