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 P1607: Powertrain Control Module (Pcm) Internal Circuit Failure
Perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING CODES . Start engine and allow to idle for 5 seconds. If DTC P1607 does not reset, problem is intermittent, system is okay at this time. If DTC P1607 resets, substitute a known-good PCM and recheck. If symptom or problem goes away, replace original PCM.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.