Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code 19: 6X Signal Fault: Notes
6X output signal is a 5-volt square wave that is initially high. Signal switches low at each of six 60-degree crankshaft position sensor pulses. 6X signal is used by PCM for greater resolution when determining ESC retard values. Code 19 will set if three 6X pulses do not occur between each reference pulse or a 6X pulse does not immediately follow a reference pulse.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.