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.
DTC P172A: General Description
At the condition the vehicle condition is in OFF (LOCK) mode, the shift by wire (SBW) shifter control module in the SBW shifter assembly turns the MTR CUT2 output to ON (12 V) when the key release switch is pressed once. The SBW shifter control module monitors the return signal of the MTR CUT2 output, and when the return signal and MTR CUT2 output does not match for a specified duration, the powertrain control module (PCM) receives malfunction from the SBW shifter control module, and stores a DTC.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.