OBD-II code · Powertrain (generic)
P05D6 Driver Mode Select Switch B Circuit High
Same as P05D2 on switch B. 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 P05D6?
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 supply
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
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 B
Related codes
- P05D2Driver Mode Select Switch A Circuit High
- P05D3Driver Mode Select Switch A Range or Performance
- P05D4Driver Mode Select Switch B Circuit
- P05D5Driver Mode Select Switch B Circuit Low
- P05D7Driver Mode Select Switch B Range or Performance
- P05D8PCV Regulator Valve Control Circuit Open
- P05D9PCV Regulator Valve Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.