OBD-II code · Powertrain (generic)
P0529 Fan Speed Sensor Circuit Intermittent
Same as P0526 with intermittent or erratic signal. 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 P0529?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent contact at connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
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
- Fan Speed Sensor, Fan Speed Wiring
Related codes
- P0526Fan Speed Sensor Circuit
- P0527Fan Speed Sensor Circuit Range or Performance
- P0528Fan Speed Sensor Circuit No Signal
- P052ACold Start A Camshaft Position Timing Over-Advanced Bank 1
- P052BCold Start A Camshaft Position Timing Over-Retarded Bank 1
- P052CCold Start A Camshaft Position Timing Over-Advanced Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.