P145C Honda Code - Fuel Tank Pressure Sensor Range/Performance Problem
Quick Answer
The fuel vapor in the fuel tank is temporarily stored in the Evaporative Emission (EVAP) and introduced in the engine through the Evaporative Emission (EVAP) Canister Purge Valve. Common causes include Faulty Evaporative Emission (EVAP) Canister Purge Valve, Faulty Fuel Tank Pressure (FTP) Sensor, Fuel Tank Pressure Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P145C Honda indicates Fuel Tank Pressure Sensor Range/Performance Problem.
- Common causes
- Common causes include Faulty Evaporative Emission (EVAP) Canister Purge Valve, Faulty Fuel Tank Pressure (FTP) Sensor, Fuel Tank Pressure Sensor harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P145C Honda Description
What are the Possible Causes of the DTC P145C Honda?
- Faulty Evaporative Emission (EVAP) Canister Purge Valve
- Faulty Fuel Tank Pressure (FTP) Sensor
- Fuel Tank Pressure Sensor harness is open or shorted
- Fuel Tank Pressure Sensor circuit poor electrical connection
How to Fix the DTC P145C Honda?
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 P145C Honda 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 P145C Honda Code
1. What are the common symptoms of OBDII code P145C in a Honda related to the fuel tank pressure sensor range/performance problem?
The common symptoms include check engine light illumination, decreased fuel efficiency, rough idling, and issues with the vehicle's emissions system.
2. What are the possible causes of the OBDII code P145C in a Honda?
Possible causes include a faulty fuel tank pressure sensor, damaged or corroded wiring connected to the sensor, a vacuum leak in the evaporative emissions system, or a problem with the fuel tank pressure sensor circuit.
3. How can I diagnose the OBDII code P145C in a Honda with a fuel tank pressure sensor issue?
Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the fuel tank pressure sensor and its wiring for damage, checking for vacuum leaks in the evaporative emissions system, and testing the sensor's functionality.
4. Can I continue driving my Honda with the OBDII code P145C related to the fuel tank pressure sensor issue?
It is not recommended to ignore this code, as it may lead to decreased fuel efficiency and potential damage to the emissions system. It is best to address the issue promptly.
5. What is the typical repair process for OBDII code P145C in a Honda caused by a fuel tank pressure sensor range/performance problem?
The repair process usually involves replacing the faulty fuel tank pressure sensor, repairing or replacing damaged wiring, fixing any vacuum leaks in the system, and clearing the trouble code from the vehicle's computer.
6. Are there any DIY tips for fixing the OBDII code P145C in a Honda related to the fuel tank pressure sensor issue?
While some basic inspections can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for an accurate diagnosis and repair of this specific issue due to the complexity of the emissions system.
7. How much does it typically cost to repair the OBDII code P145C in a Honda caused by a fuel tank pressure sensor problem?
The cost of repair can vary depending on the extent of the issue, the labor rates in your area, and the price of parts. Generally, expect to pay a few hundred dollars for parts and labor.
8. Can a faulty fuel tank pressure sensor cause other issues in a Honda besides triggering the OBDII code P145C?
Yes, a faulty fuel tank pressure sensor can lead to issues such as inaccurate fuel level readings, problems with the vehicle's emissions system, and potential drivability issues like rough idling or hesitation.
9. How long does it usually take to repair the OBDII code P145C in a Honda caused by a fuel tank pressure sensor problem?
The repair time can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a day for a mechanic to diagnose and fix the problem.
10. Is it necessary to reset the OBDII trouble code P145C in a Honda after repairing the fuel tank pressure sensor issue?
Yes, it is important to clear the trouble code from the vehicle's computer after repairing the fuel tank pressure sensor problem to ensure the check engine light does not continue to illuminate for the same issue.
Discuss the causes and fixes for P145C Honda OBDII Code
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2012 Honda Civic P145C FTP & P0497 low purge flow stored in PCM. Possible cause of a faulty FTP signal when system during purging status. PCM does not see any change of FTP signal and sets both P145C & P0497. First step should go for Fuel Tank Pressure sensor replacement.
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2010 honda crv p145c came up, cleared the code, bought a new factory fuel cap and installed it, drove maybe 5 miles total and the check engine light came back on. Do I give it more time to accrue more mileage to see if it shuts off or is it back to the mechanic?
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For your 2010 CRV the most common problem that will trigger the P145C cos is the EVAP Canister Purge Valve. The valve is on the side of the engine.
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2014 Civic: P0497 and P145C. Florida car that just came up to Chicago in December. Idle is no longer stead since the codes came on. Any suggestions on most probable solution I should try first?
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If you have both codes at the same time, then the EVAP Canister Purge Valve is the most likely cause of the problem. Before you replace the valve, make sure the hose to and from the valve are not loose or damage.
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i have a 2013 civic si i got the code P145C just one code any idea???
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where is the fuel tank pressure sensor located on the 2009 honda crv I know it somewhere on canister but no visual pictures and the canister is not visible from ground
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Yes the Fue Tank Pressure (FTP) Sensor is attached to the EVAP canister. The EVAP Canister in under your vehicle, but you need to remove a cover plate to access the canister.
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my 2011 crv problem stated with " check fuel cap" on info dash board. then engine light is ON. Brought the car to auto parts store to have it checked. It said P145C code . And the " check fuel cap" warning went away. Are these related? What should I replace?
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Yes, the codes are related. Start by checking the Fuel Cap. Make sure the cap and cap seal are not damage, and the cap is close tight. Once you confirmed that the cap is closed tight, then you can clear the code and drive again. If the problem persist, then you may have to replace the EVAP Canister Purge Valve.
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2007 Honda Odyssey. Had fuel cap indicator, changed cap gasket and purge solenoid. Then got p145c check engine light code, changed fuel tank pressure sensor. Still have p145c code. Any ideas?
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According to a national database of repairs for your same model and year, the most likely cause of the P145C is the EVAP Canister Purge Valve
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Same thing has happened on My 2010 Honda Accord I got the P145c and P0497 codes, put new factory gas cap on and went a day before the engine light came back on. Is this the same problem as the CRV?
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Is this the same problem as the CRV?
Yes is the same. The EVAP Purge Solenoid Valve is the most common cause of the problem when you have both codes P145C and P0497.
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Hi, I have a 2009 Honda Civic. Last week I got a message on my dashboard "check your fuel cap". A few days later my engine light went on with the code p145c. Any idea what the problem is? Is it safe to drive?
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It's safe to drive, but eventually may have to replace the EVAP Purge Solenoid Valve.
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I replaced the fuel cap and the engine light is still on. I just double checked the codes and its p145c and 0497. Would it most likely be the EVAP Canister Purge Valve? Could it be the FTP as well?
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According to a national database of repairs for your model year, if you have both codes, 90% of the times the problem is the EVAP Purge Solenoid Valve.
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is EVAP Purge Solenoid Valve and EVAP Canister Purge Valve the same thing?
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Yes, but the engine light will remain ON and your vehicle won't be able to pass the smog check,
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I got the 'Fuel Cap' message on my 2012 Odyssey. Replaced it with factory fuel cap, cleared code but this message came back on after few days. Drove the car for few weeks and now getting 'Check Emmission System' with P145C code. I have cleaned the purge solenoid (looked pretty clean) and put it back on. Car ran for couple of weeks and now getting the P145C code and fuel cap message again? Do I need to replace the purge solenoid?
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I checked a national database of repairs for your year model and 90% of the time the EVAP canister purge valve was the cause of the problem.
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2011 civic 1.8l new fuel pump now its codes p145c and dies? please help, Thank you!
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If your 2011 Civic 1.8L is showing P145C (Fuel Tank Pressure Sensor Range/Performance) after a new fuel pump install and now stalling, here’s what I’d look at:
1. Fuel Tank Pressure (FTP) Sensor
- This sensor is part of the EVAP system, usually mounted on or near the fuel pump assembly.
- When replacing the pump, the FTP sensor or its connector may have been left unplugged, damaged, or wiring disturbed. Double-check the harness and connector at the top of the tank.
2. EVAP Canister / Lines
- If the FTP sensor isn’t reading correctly, the ECU can’t manage tank pressure. That can cause drivability problems and even stalling if purge/vent valves are stuck open or if charcoal granules have entered the lines.
- Inspect the EVAP canister for damage or signs of charcoal debris.
3. Fuel Pump Install Check
- Make sure all connectors and hoses on top of the pump were reconnected properly. A loose connector, pinched harness, or swapped plug can cause both the P145C code and the stalling.
- Also confirm that the fuel pump assembly used is the correct part number for your Civic. Some aftermarket assemblies don’t include a compatible FTP sensor.
4. Next Steps
- Scan live data for the Fuel Tank Pressure sensor. It should change when you open/close the gas cap. If it stays fixed or out of range, the sensor is bad or not connected.
- If the wiring and sensor are good, the code may clear after a proper repair, but stalling suggests you may also have a fuel delivery issue from the new pump itself.
Since the problem started right after the pump replacement, I’d go back and carefully inspect the sensor and wiring at the pump assembly. Nine times out of ten, this code and symptom on your Civic is due to a disturbed FTP sensor or connector during the pump job.
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