P1381 Cylinder Position Sensor Intermittent Interruption
This fault is part of the Honda misfire codes guide. It covers the system and the order to check it.
What does P1381 mean on a Honda?
P1381. Cylinder Position Sensor Intermittent Interruption. This Honda-enhanced code applies to Civic, Accord, Odyssey, Prelude.
Common causes of P1381
- Intermittent cylinder position sensor wiring in the distributor harness
- Oil contamination of the CYP sensor from a leaking distributor seal
- Worn distributor shaft causing erratic CYP pulses
- Heat-related sensor dropout
How to fix P1381
- Monitor CYP signal while wiggle-testing the harness with an HDS scan tool
- Inspect inside the distributor for oil from a failed shaft seal
- Check distributor shaft end-play and bearing smoothness
- Replace the sensor or distributor housing only after wiring is verified
- Clear codes and retest hot and cold
Sources and review
- Last updated 2026-09-24.