OBD-II code · Powertrain (generic)
P0726 Engine Speed Input Circuit Range or Performance
Same as P0725 with the signal in plausible range yet not matching the engine model.
Is it safe to drive with P0726?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal drift between ECM output and TCM input
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.