Symptoms of P0006
- Check-engine light on, sometimes with rough or uneven running.
- Hesitation, surging, or a noticeable change in fuel economy.
- Occasionally hard starting or a smell of unburnt fuel.
Common causes of P0006
- A failing or contaminated sensor (MAF, MAP, oxygen or air-fuel sensor).
- Intake or vacuum leaks, or an exhaust leak near an upstream sensor.
- Wiring, connector, or fuel-delivery problems that skew the reading.
Useful checks before replacing parts
- Measure valve control voltage, feed, ground, resistance, and current draw while checking for short-to-ground conditions.
- Inspect connector sealing, harness routing, fuse or relay supply, corrosion near fuel-system connectors, and module driver output.
- Review whether the low circuit corresponds with no-start, stall, fuel pressure loss, or freeze-frame low-voltage conditions.
Related OBD-II codes
These nearby fuel / air entries can help compare wording and pin down the fault area.