Jeep B1638: Right Hi Beam Control Circuit High

Is your scanner showing Jeep B1638?
No worries. We'll show you what it means and how to deal with it.

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Jeep B1638: Right Hi Beam Control Circuit High

DIY Difficulty Level
Repair Cost
Can I Still Drive?
Yes (Short-term only)

What Does The Jeep B1638 Code Mean?

With the Headlamps active. When the Front Control Module (FCM) detects a high condition, this code will set.

What Are The Potential Causes Of The Jeep B1638 Code?

  • (L34) high beam control circuit open
  • Right high beam bulb
  • Front control module (FCM)

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> 12V Auto Waterproof Fuse Relay Box Block Kit
>>> Front Control Module
>>> Low Beam Headlight Bulb

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Jeep Grand Cherokee WK– 2005, pp. 8L-17 – 8L-19.

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