P1445
PowertrainPurge Flow Sensor Circuit High Input
P1445 is a manufacturer-specific code that varies by make. On Ford and Jaguar/Land Rover models particularly, it typically relates to a fault in the EVAP system, often the canister vent valve or vapour management system. Other makes interpret it differently. Always check the workshop manual for your specific vehicle.
ⓘ Information only. This page provides general educational information about fault code P1445. We do not assess the urgency or safety implications of any specific fault. That requires in-person diagnosis by a qualified mechanic. Full terms.
Recommended next steps
Whether a fault is urgent, drivable, or routine depends entirely on the cause on a specific vehicle, and that can only be determined by a qualified mechanic with diagnostic equipment. If a warning light is illuminated, the most reliable next step is professional diagnosis.
What does P1445 mean?
P1445 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Purge Flow Sensor Circuit High Input.
Symptoms commonly associated with this code
Symptoms that drivers often report alongside this code. Not all may apply to every case:
- • Engine warning light, usually the only obvious symptom
- • Sometimes a slight smell of petrol around the vehicle
- • Drivability typically unaffected
- • Hard starting after refuelling on cars with stuck-closed vent valves
- • On certain Jaguar/Land Rover models: poor running for the first minute after starting
Possible causes
Causes commonly associated with P1445, listed in approximate order of typical investigation. The actual cause on a specific vehicle can only be confirmed by professional diagnosis.
- 1. Failed canister vent valve (most common on the makes affected)
- 2. Cracked or split EVAP hose between the canister and the engine
- 3. Faulty fuel tank pressure sensor
- 4. Saturated charcoal canister, the canister has reached capacity and can't accept more vapour
- 5. Wiring fault to the vent valve or pressure sensor
- 6. On Land Rover and Jaguar diesel models: this code can also relate to fuel system issues, check your specific year's documentation
How mechanics typically diagnose
A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training.
- 1. Identify the manufacturer-specific interpretation for your make and year
- 2. Inspect the EVAP system for visible damage: cracked hoses, loose clamps, missing fuel cap seal
- 3. Test the vent valve electrically and operationally; a hand vacuum pump (£20) helps verify it holds and releases vacuum correctly
- 4. Read live fuel tank pressure data with a scan tool
- 5. Workshop smoke test of the EVAP system (£30-£60) finds leaks reliably
- 6. Check the fuel cap seal for cracks; old or damaged caps are a cheap first try
Common questions about P1445
Why does the same code mean different things on different cars? +
Manufacturer-specific code ranges (P1xxx) are defined by individual carmakers rather than the SAE standard, so a P1445 on a Ford means something different from a P1445 on another make. Always check your specific make's documentation when chasing P1xxx codes; generic OBD readers can't always interpret these correctly.
Will my MOT pass? +
EVAP codes don't directly affect MOT emissions readings, but if engine warning light is on at the time of test, that's an automatic fail under MOT rules for cars from 2018 onwards. Fix the underlying fault first, drive a few cycles to clear the light, then book the test.
Is there a smell of petrol after refuelling? +
Common with EVAP faults. The system normally captures fuel vapour escaping from the tank and routes it to the engine for burning. With a fault, vapour escapes to atmosphere, often immediately after a fillup when tank pressure is highest. The smell usually fades within hours.
Manufacturer-specific notes
Some manufacturers publish additional definitions or variations for this code. Always cross-check with your vehicle's own service documentation.
Information only, not professional advice
The information on this page is provided for general guidance and educational purposes only. It is not a substitute for diagnosis or repair advice from a qualified mechanic. Always verify any fault before paying for repairs. carfaultcodes.co.uk accepts no liability for decisions made based on this information. Full terms →