We unhooked an AC connection today and then rehooked it under the hood and got the SERVICE ELECTRIC VEHICLE SYSTEM and a code P167B code, How can we clear this code without going to a dealer? On the gas models you could pump the gas pedal three times with the ignition switch on. How do you clear it with the electric model?
karma
'13 500e was my only car from 2015-25. 2024 500e added in 2025.
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14,640 Posts
Code-clearing methods are the same as if the car won't start:
500e HOW TO: Buy, Set Up, Charge, Drive, & Fix...
- OBD
- 10 to 50 key cycles, each with 3+ minutes off
- 12V disconnect
- HV disconnect
500e HOW TO: Buy, Set Up, Charge, Drive, & Fix...
'13 500e was my only car from 2015-25. 2024 500e added in 2025.
Joined
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14,640 Posts
If you don't already have OBD, you should read #6 here:
Post-Purchase Preparation. 5/7/23 Update: Prevent...
Post-Purchase Preparation. 5/7/23 Update: Prevent...
'13 500e was my only car from 2015-25. 2024 500e added in 2025.
Joined
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14,640 Posts
You might only need the yellow cable if the odometer is flashing, but either way, you can access many modules without it...:
Before connecting OBD, have the key OFF, & then turn it ONLY ONE CLICK to "MAR", NOT 2 clicks to "AVV". Click to enlarge:
![]()
Then Alfa connects to the car with the LX the same as with the KW902 shown here:
![]()
That example is for the Battery Pack Control Module. Other modules connect the same. Just go back to the home screen & select whatever module you want to check, where it will show right on the screen whether or not the yellow cable is required:
![]()
For all the modules that don't need it you can do a code check:
![]()
Then clear faults:
![]()
Make sure you follow any on-screen instructions for key position, although I think my first step above usually covers that ("ignition" ON, but not twisted far enough to "start" the "engine").
Before connecting OBD, have the key OFF, & then turn it ONLY ONE CLICK to "MAR", NOT 2 clicks to "AVV". Click to enlarge:
Then Alfa connects to the car with the LX the same as with the KW902 shown here:
That example is for the Battery Pack Control Module. Other modules connect the same. Just go back to the home screen & select whatever module you want to check, where it will show right on the screen whether or not the yellow cable is required:
For all the modules that don't need it you can do a code check:
Then clear faults:
Make sure you follow any on-screen instructions for key position, although I think my first step above usually covers that ("ignition" ON, but not twisted far enough to "start" the "engine").
'13 500e was my only car from 2015-25. 2024 500e added in 2025.
Joined
·
14,640 Posts
Right, & if one of the steps doesn't work you try another*, but always, ALWAYS leave the humidity sensor disconnected, at least until after every issue is resolved.
* For example, if a couple of 3-minutes-off key cycles doesn't work, try OBD code clearing & if that doesn't work try a 12V disconnect, & if that doesn't work try HV disconnect & then try OBD again. Sometimes it's easier for me to describe just going all-out from the start, by disconnecting 12V, then HV for 30+ hours, then reconnect & clear in OBD.
As I mentioned above, please see #3 here:
500e HOW TO: Buy, Set Up, Charge, Drive, & Fix...
* For example, if a couple of 3-minutes-off key cycles doesn't work, try OBD code clearing & if that doesn't work try a 12V disconnect, & if that doesn't work try HV disconnect & then try OBD again. Sometimes it's easier for me to describe just going all-out from the start, by disconnecting 12V, then HV for 30+ hours, then reconnect & clear in OBD.
As I mentioned above, please see #3 here:
500e HOW TO: Buy, Set Up, Charge, Drive, & Fix...
'13 500e was my only car from 2015-25. 2024 500e added in 2025.
Joined
·
14,640 Posts
& please nobody be sorry for not understanding me. If I didn't make something perfectly clear, that's on me.
The actual steps don't seem all that complicated to me, but I have a pretty hard time attempting to write the instructions.
I've edited the "how to" page dozens of times & there's still room for improvement, but I still think it's best for me to just refer people to it.
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