P0452 OBD-II Trouble Code: Evaporative Emission Control System Pressure Sensor Low Input

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0452 code

P0452 is a diagnostic trouble code (DTC) for "Evaporative Emission Control System Pressure Sensor Low Input". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0452 DIAGNOSTIC Get a fair and transparent estimate upfront

P0452 trouble code definition

A P0452 trouble code is related to the part of a vehicle’s emissions control system, or EVAP, that controls fuel tank pressure. This is usually called the fuel tank pressure sensor or the evaporative pressure sensor.

What the P0452 code means

P0452 is an OBD-II generic code for a voltage issue with the EVAP system in that the voltage received by the engine computer from the system is not within the manufacturer’s parameters.

What causes the P0452 code?

The most common causes for a P0452 include:

  • Loose fuel gap
  • Faulty fuel tank pressure sensor
  • Faulty wiring for the fuel tank pressure sensor
  • Faulty purge control solenoid
  • Clogged or damaged charcoal canister
  • Vacuum leak

What are the symptoms of the P0452 code?

Other than a Check Engine Light, a P0452 will likely not cause any noticeable symptoms. Other EVAP codes may be present.

How does a mechanic diagnose the P0452 code?

Like any EVAP code, your mechanic will first inspect the fuel cap, retighten it, clear the code, reset the engine computer, and test the vehicle to see if the code returns. If not, then it’s just another case of “loose gas cap syndrome.” However, if the code persists, the fuel tank pressure sensor could be the culprit. With a professional OBD-II scanner, your mechanic can look at the fuel tank pressure readings to see if the engine computer is reading vacuum from the sensor. If not, the wiring from the sensor should be inspected to ensure there isn’t a communication error before replacing the pressure sensor.

Common mistakes when diagnosing the P0452 code

The most common mistake is replacing the pressure sensor when the problem simply was the fuel cap was not tight enough. If other EVAP codes are present with a P0452, those issues may also be the route cause.

How serious is the P0452 code?

While they can increase a vehicle’s emissions and carbon footprint, most EVAP related codes have zero effect on a vehicle’s performance.

What repairs can fix the P0452 code?

The most common repairs for a P0452 are as follows:

Additional comments for consideration regarding the P0452 code

The fuel tank pressure sensor is usually on top of the fuel tank by the primary pump, meaning that unless your vehicle is equipped with an access panel, you’ll have to remove the fuel tank to access the sensor.

Need help with a P0452 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

P0452
trouble codes
Check Engine Light

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0452 code.

SCHEDULE P0452 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,987

Rating Summary
4,593
191
48
28
127
4,593
191
48
28
127

Robert

12 years of experience
6 reviews
Robert
12 years of experience
Ford Fusion - Check Engine Light is on - Stockton, California
Robert was very knowledgeable and professional. He is also very friendly and likable individual. I’m very pleased and satisfied with his work.

Sonal

16 years of experience
19 reviews
Sonal
16 years of experience
Mercedes-Benz S550 - Check Engine Light is on - Federal Way, Washington
Sonal was very knowledgeable and took the time to explain each of the 50 point checklist thoroughly. Sonal definitely has an abundance of Mercwdes Benz experience regarding mechanical problems.

Daniel

20 years of experience
301 reviews
Daniel
20 years of experience
Chrysler Town & Country - Check Engine Light is on - Santa Fe, Texas
Daniel was on time and performed a 50 inspection for us. We now have a path forward for repair and will be scheduling Daniel to return and make the repairs.

Michael

15 years of experience
515 reviews
Michael
15 years of experience
Chevrolet Equinox - Check Engine Light is on - Woodstock, Georgia
Mike really knows his stuff. He took alot of time with me making sure I understood what was going on with my vehicle.


Related questions

My car is showing two trouble codes: P1639 and PO452

Hello. The diagnostic codes you are receiving may be a result of both sensors failing, or a power supply issue. The code P1639 stands for an A/C refrigerant pressure sensor voltage shortage. The second code P0452 stands for the fuel...

Black smoke and rich fuel the codes P0191 & P0452 and short trim bank 1 & 2. Both at -28.9

Hello. You have 2 separate problems here. The P0191 (fuel rail pressure sensor circuit problem) may just be a symptom - it is reporting suspect fuel pressure on the rail. The fuel pressure on the rail is controlled by the...

More related articles

10 Biggest Car-Related Headaches and What to Do About Them
You You don’t want to, but if you're a car owner it's inevitable that at some point you will experience car troubles. It's also fairly certain that the machine you rely on will cause you grief when you least expect...
P0427 OBD-II Trouble Code: Catalyst Temperature Sensor Low (Bank 1)
Trouble code P0427 means the PCM detects that the catalyst temperature sensor reads a lower temperature than the normal range in engine bank 1.
P2081 OBD-II Trouble Code: Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1
P2081 P2081 trouble code definition Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1 What the P2081 code means P2081 is an OBD-II generic code for the exhaust gas temperature sensor circuit signal is intermittent for bank 1 sensor...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com