P0451 Saturn Code - Fuel Tank Pressure Sensor Performance
Quick Answer
The fuel tank pressure sensor measures vapor pressure or vacuum in the Evaporative Emission (EVAP) system. Common causes include Faulty Fuel Tank Pressure (FTP) Sensor, Fuel Tank Pressure Sensor harness is open or shorted, Fuel Tank Pressure Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0451 Saturn indicates Fuel Tank Pressure Sensor Performance.
- Common causes
- Common causes include Faulty Fuel Tank Pressure (FTP) Sensor, Fuel Tank Pressure Sensor harness is open or shorted, Fuel Tank Pressure Sensor circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P0451 Saturn Description
What are the Possible Causes of the DTC P0451 Saturn?
- 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)
How to Fix the DTC P0451 Saturn?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0451 Saturn code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0451 Saturn Code
1. What does the OBDII code P0451 mean on a Saturn?
P0451 indicates a performance issue with the fuel tank pressure sensor, which monitors the pressure in the evaporative emissions (EVAP) system.
2. What are the symptoms of a P0451 code on a Saturn?
Common symptoms include an illuminated Check Engine Light, possible fuel odor, and, in some cases, difficulty with refueling or reduced fuel efficiency.
3. What causes the P0451 code on a Saturn?
Possible causes include a faulty fuel tank pressure sensor, damaged or disconnected EVAP system hoses, wiring issues, or a malfunctioning EVAP canister.
4. Can a loose gas cap trigger the P0451 code on a Saturn?
While a loose gas cap is not a direct cause of P0451, it can lead to EVAP system performance issues, so it’s worth checking.
5. How do you diagnose a P0451 code on a Saturn?
Diagnosis involves using an OBDII scanner, inspecting the fuel tank pressure sensor, checking EVAP system hoses for leaks or damage, and testing the sensor’s wiring and connectors.
6. How do you fix the P0451 code on a Saturn?
Repairs may include replacing the fuel tank pressure sensor, repairing damaged EVAP hoses, fixing wiring issues, or replacing the EVAP canister if necessary.
7. Can you drive a Saturn with the P0451 code?
Yes, but it’s not recommended for prolonged periods, as EVAP system issues can affect emissions and fuel efficiency, and the Check Engine Light may prevent passing emissions tests.
8. How much does it cost to fix the P0451 code on a Saturn?
The repair cost can range from $150 to $400, depending on whether the issue is with the sensor, hoses, or other EVAP components.
9. Will clearing the P0451 code with an OBDII scanner fix the problem?
Clearing the code may temporarily turn off the Check Engine Light, but the issue will return if the underlying problem is not addressed.
10. Can a P0451 code on a Saturn cause other problems if left unrepaired?
Yes, prolonged EVAP system issues can lead to increased emissions, reduced fuel efficiency, and potential engine performance problems over time.
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