OBD-II code · Powertrain (generic)
P059D Active Grille Air Shutter A Position Sensor Circuit Low
Same as P059A with the signal voltage below the plausible range. 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 P059D?
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
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Active Grille Position Sensor A
Related codes
- P05ACActive Grille Air Shutter B Position Sensor Circuit Low
- P059AActive Grille Air Shutter A Position Sensor Circuit
- P059BActive Grille Air Shutter A Position Sensor Range or Performance
- P059CActive Grille Air Shutter A Position Sensor Circuit High
- P059EActive Grille Air Shutter A Position Sensor Circuit Intermittent
- P059FActive Grille Air Shutter A Performance Stuck Off
- P05A0Active Grille Air Shutter A Stuck On
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.