OBD-II code · Powertrain (generic, extended)
P253D PTO Sense Circuit High
The PTO sense input reads stuck high — short to battery voltage or open switch return. The ECM cannot detect engagement.
Is it safe to drive with P253D?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySense wire shorted to battery voltage
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Pto Sense Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.