P1607 Cruise Control Input Processor Fault
What does P1607 mean on a Toyota?
P1607 — Cruise Control Input Processor Fault. This Toyota-enhanced code applies to Camry, Corolla, RAV4 with cruise control.
Common causes of P1607
- Internal cruise processor fault
- Corrupted cruise calibration
- Low voltage during cruise operation
- Failing cruise switches feeding bad input
- ECM fault
How to fix P1607
- Test all cruise switch inputs
- Verify system voltage stability
- Clear and see if the fault returns immediately
- Check for ECM calibration updates
- Replace the ECM only if the fault persists