Engine-Codes - Chevrolet - P0452 Chevrolet

P0452 Chevrolet Code - Fuel Tank Pressure Sensor Circuit Low Voltage

- Code Popularity: 114,990 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0452 Chevrolet?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Fuel Tank Pressure (FTP) Sensor
  • Fuel Tank Pressure Sensor harness is open or shorted
  • Fuel Tank Pressure Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

Code Tech Notes

On most Chevrolet vehicles the sensor is on top of the fuel tank. The P0452 code may set when replacing the fuel filter, AutoCodes.com user recommends disconnecting the car battery before replacing the fuel filter.





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How to Fix the DTC P0452 Chevrolet?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0452 Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0452 Chevrolet Code Mean?

The fuel tank pressure sensor measures vapor pressure or vacuum in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) supplies a 5 V reference and a low reference circuit to the fuel tank pressure sensor. The fuel tank pressure sensor signal voltage varies depending on EVAP system pressure or vacuum. The control module also uses this fuel tank pressure signal to determine atmospheric pressure for use in the engine-off small leak test, DTC P0442. Before using this signal as an atmospheric reference, it must first be re-zeroed. The Diagnostic Trouble Code (DTC) will be set if the fuel tank pressure sensor voltage is less than 0.15 V for greater than 10 s.

P0452 Chevrolet Code - Fuel Tank Pressure Sensor Circuit Low Voltage

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