OBD-II code · Powertrain (generic)
P019F Alternative Fuel Tank A Pressure Sensor Performance
Alternative fuel tank A pressure reading implausible.
Is it safe to drive with P019F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor reading drifted
- Less likelySensor element aged beyond calibration window
- Less likelySensor element contaminated by oil, soot or coolant
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Alt Fuel Tank Pressure Sensor
Related codes
- P019CO2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 3
- P019DO2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 3
- P019EAlternative Fuel Tank A Pressure Sensor Circuit
- P01A0Alternative Fuel Tank A Pressure Sensor Circuit Low
- P01A1Alternative Fuel Tank A Pressure Sensor Circuit High
- P01A2Alternative Fuel Tank A Pressure Sensor Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.