OBD-II code · Powertrain (generic)
P081A Starter Disable Circuit Low
Starter disable circuit reads stuck low — short to ground or low-side driver stuck on. The starter is permanently disabled, blocking engine cranking.
Is it safe to drive with P081A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDisable wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
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
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Starter Disable Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.