OBD-II code · Powertrain (generic)
P0725 Engine Speed Input Circuit
A general circuit fault on the engine speed signal that the TCM receives from the ECM. Without this signal the TCM cannot synchronise gear shifts to engine load.
Is it safe to drive with P0725?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyHarness fault between ECM and TCM
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Engine Speed Signal To Tcm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.