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CEL after JB4 install

zbc1969

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installed the jb4 with fuel wires and after updating the firmware to v10 I'm getting a CEL. Car seems to run fine but has anyone else run into this?
 
Last edited:
Here are the two codes
 

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Low input. that usually means that the sensor is unplugged. Check around the vecinity where you installed the JB4 wires for possible loose connections on other sensors and the JB4s as well.
 
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Low input. that usually means that the sensor is unplugged. Check around the vecinity where you installed the JB4 wires for possible loose connections on other sensors and the JB4s as well.
Everything is tight I just double-checked
 
Read codes via the JB4.

Also, check the wires on the JB4 side of the harness. Sometimes people knock one loose inside the enclosure when they open it for the blue tooth adapter.
 
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Ok I'll do that. I cleared it for now to see if it comes up again. Is this a pretty normal code to throw with the JBL?
 
Codes usually indicate an issue. Since that code relates to sensors the JB4 attaches too if it comes back then something is still wrong you need to address.
 
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