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Troubleshooting a P.L. Error Code on a Tekonsha Primus IQ Brake Controller  

Question:

What does P L code mean on Primis. IQ? Thx Rob

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Expert Reply:

The P.L. code that you are seeing on your Tekonsha Primus IQ Brake Controller part # TK90160 means there is a power interruption while the brake pedal is depressed. This typically is caused by a bad or insufficient ground. You can test this by attaching the white wire from this controller directly to the negative side of a vehicle battery to see if the problem goes away.

I also attached an FAQ article on troubleshooting brake controller installations for you to check out.

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Jameson C

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