OBD-II code · Powertrain (generic)
P05D1 Driver Mode Select Switch A Circuit Low
Same as P05D0 with the signal shorted to ground. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P05D1?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Driver Mode Switch A
Related codes
- P05D5Driver Mode Select Switch B Circuit Low
- P05CECold Start B Camshaft Position Timing Performance Bank 1
- P05CFCold Start B Camshaft Position Timing Performance Bank 2
- P05D0Driver Mode Select Switch A Circuit
- P05D2Driver Mode Select Switch A Circuit High
- P05D3Driver Mode Select Switch A Range or Performance
- P05D4Driver Mode Select Switch B Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.