P0452: Evaporative Emission Control System Pressure Sensor Low Input
3 vehicles · 3 makes · $80-$600 repair
Most Reported On
P0452 is an OBD-II diagnostic trouble code meaning “Evaporative Emission Control System Pressure Sensor Low Input.” P0452 means the Evaporative Emission (EVAP) system's fuel-tank pressure sensor is sending a signal that is too low — essentially a flat or below-range voltage. This sensor monitors pressure and vacuum in the sealed fuel system so the computer can run leak tests and manage fuel vapors. A persistently low reading tells the PCM the sensor signal is implausible, often from a short in the circuit or a failed sensor. It generally won't hurt drivability but turns on the check engine light and can cause emissions test failure. This code is most commonly reported on 2012-2018 Ford Focus, 2004-2012 Chevrolet Colorado, and 2002-2003 Pontiac Bonneville, with repair costs ranging from $80 to $600.
Common Causes
Typical Repair Cost
Based on 3 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0452, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (3)
FAQ
What does P0452 mean?
P0452 stands for "Evaporative Emission Control System Pressure Sensor Low Input." P0452 means the Evaporative Emission (EVAP) system's fuel-tank pressure sensor is sending a signal that is too low — essentially a flat or below-range voltage. This sensor monitors pressure and vacuum in the sealed fuel system so the computer can run leak tests and manage fuel vapors. A persistently low reading tells the PCM the sensor signal is implausible, often from a short in the circuit or a failed sensor. It generally won't hurt drivability but turns on the check engine light and can cause emissions test failure.
What are the most common causes of P0452?
The most common causes of P0452 are: Failed fuel tank pressure (FTP) sensor, Short to ground in the sensor signal wiring, Corroded or loose connector at the sensor, Open or damaged sensor reference/signal circuit, Sensor mounted/seated improperly on the tank or EVAP line, Faulty PCM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0452?
Repair costs for P0452 range from $80 to $600, depending on the vehicle and root cause.
Which vehicles are affected by P0452?
Au7o has documented P0452 across 3 vehicle models from 3 manufacturers: Chevrolet, Ford, Pontiac.
Sources (8)
- ForumReddit r/MechanicAdvice - 2014 Ford Focus Stalling and Rough Idle Due to Canister Purge Valve
- ForumGM bulletin and service information addressing EVAP vent valve contamination on Colorado/Canyon platform
- NHTSANHTSA complaints for Chevrolet Colorado citing EVAP codes and inability to refuel normally
- NHTSANHTSA Recall Campaign 03V238000 — Fuel Tank Pressure Sensor (official API record)
- RecallPontiac Bonneville 2003 Fuel System: Storage Tank Assembly Recall 03V238000 — Justia
- RecallPontiac Recall 03038: GM/Fuel Tank Pressure Sensor — 2002 Bonneville — CarComplaints
- RecallPontiac Recall 03038: GM/Fuel Tank Pressure Sensor — 2003 Bonneville — CarComplaints
- articlePontiac Bonneville Recalls — Cars.com (lists 03V238 SSEi supercharged V6)
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.