Webjun 21, 2014 · i have a 2012 freight liner m2 chassis , with a cummings diesel engine.

Today when i turned the key a code displayed bh 33.

The truck cranked fine, i drove it.

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2014 freightliner 1fvhg3dv4ehfp3134, keep getting code spn 6918, fmi 7, bulkhead module, missing smart switch, mechanical system not responding, or out of.

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