AutoCodes – Generic – P145C

P145C 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 EVAP canister purge valve. 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 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 indicates Fuel Tank Pressure Sensor Range/Performance Problem.
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: 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.

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Code Popularity 29,094

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P145C Description

The fuel vapor in the fuel tank is temporarily stored in the evaporative emission (EVAP) and introduced in the engine through the EVAP canister purge valve. The Powertrain Control Module (PCM) controls the amount of vapor introduced into the engine by varying the duty cycle to the EVAP canister purge valve according to the condition of the engine.

OBDII Code P145C - Fuel Tank Pressure Sensor Range/Performance Problem - AutoCodes.com — P145C Code - Fuel Tank Pressure Sensor Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P145C?

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?

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 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.

Need more information about the P145C code?

Need more information on how to fix the P145C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P145C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P145C Acura — Fuel Tank Pressure Sensor Range/Performance Problem
P145C Ford — Fan System Component Error 'A'
P145C Honda — Fuel Tank Pressure Sensor Range/Performance Problem
P145C Lincoln — Fan System Component Error 'A'
P145C Mercury — Fan System Component Error 'A'

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P145C Code

1. What are the common symptoms of OBDII code P145C (Fuel Tank Pressure Sensor Range/Performance Problem)?

The common symptoms include the check engine light being illuminated, poor fuel efficiency, rough idling, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P145C?

Possible causes of code P145C include a faulty fuel tank pressure sensor, damaged wiring or connectors in the sensor circuit, a vacuum leak in the fuel system, or a problem with the evaporative emissions control system.

3. How can I diagnose the source of OBDII code P145C?

Diagnosing code P145C involves using a scan tool to retrieve the code, checking the fuel tank pressure sensor and its wiring for damage, inspecting the fuel system for leaks, and testing the evaporative emissions control system components.

4. Can OBDII code P145C cause any long-term damage to my vehicle?

While code P145C itself may not cause immediate damage, ignoring the issue can lead to decreased fuel efficiency and potential damage to other engine components over time.

5. How can I fix OBDII code P145C?

To fix code P145C, you may need to replace the fuel tank pressure sensor, repair any damaged wiring or connectors, address any vacuum leaks in the fuel system, or repair or replace components in the evaporative emissions control system as needed.

6. Is it safe to continue driving with OBDII code P145C present?

It is generally not recommended to continue driving with code P145C present, as it can affect your vehicle's performance and fuel efficiency. It's best to address the issue promptly to prevent further problems.

7. Can a DIY enthusiast repair OBDII code P145C, or should I seek professional help?

While some DIY enthusiasts may be able to address code P145C themselves, it's recommended to seek professional help if you're unsure about diagnosing or repairing the issue to avoid further complications.

8. How much does it typically cost to repair OBDII code P145C?

The cost of repairing code P145C can vary depending on the underlying cause, but it may range from $100 to $500 or more, including parts and labor.

9. Will resetting the check engine light resolve OBDII code P145C?

Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing code P145C. It's important to diagnose and repair the problem to prevent the code from reappearing.

10. How often does OBDII code P145C occur in vehicles?

OBDII code P145C (Fuel Tank Pressure Sensor Range/Performance Problem) is a relatively common code that can occur in various vehicles, particularly those with evaporative emissions control systems.