Code B3993

[1bad65]

I took my 2016 RAM 1500 to the store the other day and my CEL went on. I have a basic scanner and it's telling me Fault:02 and Pend:01. When I scroll through, I get 2 that say N/A and one that gives me code B3993. The truck has 57K miles and runs very well. I was going to order a BlueDriver Bluetooth Wireless scanner to dig a little deeper but was wondering if anyone has ever encountered such a code and what the remediation steps were. I disconnected the neg terminal and reconnected it after an hour, start and drive the truck and all is well. As soon as I shut it off and restart it the CEL comes back on. Looking to avoid the dealership service department so any help is greatly appreciated. Thanks.

 

[crash68]

Before you spend money on the Bluedriver, look into AlfaOBD. It has a lot of diagnostic capabilities along with the ability to make vehicle configuration changes.

 

[1bad65]

I'll take a look. Thanks.

 

[GTyankee]

B3933: Code Meaning, Causes, Symptoms, & Tech Notes

The air temperature sensors are a 2-wire negative temperature coefficient thermistor. This sensor operates using signal and low reference circuits. As the

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