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Code 0.L on Tekonsha Primus IQ Brake Controller  

Question:

Primus IQ code says 0.L. Sees overload but what does this mean?

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Expert Reply:

If your Primus IQ # TK90160 is showing error code OL, it means that there is too much current on the electric brake wire, which is the blue wire. That most likely indicates there is a short to the ground, though it can also show up if your trailer is using electric over hydraulic brakes.

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Kyle S

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