Causes and Fixes P0725 Code: Engine Speed Input Circuit

How to fix P0725 Code: Engine Speed Input Circuit
A P0725 code is set when the transmission control module (TCM) does not receive a valid engine speed signal from the engine control module (ECM).
Common causes include a bad crankshaft/camshaft position sensor, transmission speed sensor, or wiring issues.
Example Fixes
Nissan Altima with both a P0725 Code and P0335 Code was a bad crank position sensor.
Honda Accord with a P0725 Code and P0720 Code was a bad speed sensor.

Possible Causes of a P0725 Code:
Battery or Alternator Charging Issues
Bad Crankshaft/Camshaft Position Sensor
Bad Speed Sensor
Wiring Issues
Bad Computer (TCM/ECM/PCM)


By using this information user assumes all risk of use.