Engine-Codes - Honda - P1456 1997 HONDA CIVIC

P1456 1997 HONDA CIVIC - Evaporative Emissions Control System Leakage Fuel Tank

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1456 1997 HONDA CIVIC Possible Causes

  • Missing Fuel cap
  • Incorrect fuel filler cap used
  • Fuel filler cap remains open or fails to close
  • Foreign matter caught in fuel filler cap
  • EVAP purge control solenoid
  • EVAP canister
  • Fuel tank pressure sensor

How is the P1456 1997 HONDA CIVIC code repair?

Start by checking 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's pins.

Tech Notes

Usually, loose or bad fuel tank filler cap will trigger this codes. Retighten fuel tank filler cap and erase code to repair the problem.

What is the cost to diagnose the P1456 1997 HONDA CIVIC code

Labor: 1.0

The cost to diagnose the P1456 1997 HONDA CIVIC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

When is the code detected?

The P1456 code is detected when the EVAP system has a very small leak.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Possible a noticeable fuel odor caused by the release of fuel vapors

P1456 1997 HONDA CIVIC Meaning

The evaporative emission (EVAP) control system stores fuel vapor from the fuel tank in the EVAP canister temporarily to prevent it from escaping to the atmosphere and to enable it to be drawn into the engine by intake manifold vacuum and burned. In addition, the onboard refueling vapor recovery system (ORVR) stores fuel vapor generated when refueling in the EVAP canister.
The EVAP control system leak detection method improves the accuracy and frequency of the detection by determining faulty components and vapor leakage for each part. The EVAP control system (from the purge valve to the fuel tank) is divided into two parts. One is the "EVAP Canister Side" (from the EVAP two way valve to the purge valve) and the other is the "Tank Side" (from the EVAP two way valve to the fuel tank). There is 0.04 inch leak detection and 0.02 inch leak detection. If the 0.04 inch leak detection results are OK, the 0.02 inch leak detection runs.

More Information

Need more information on how to fix the P1456 1997 HONDA CIVIC code?
Get Access to Factory Service Manuals

Need more help?

Get the P1456 1997 Honda Civic code diagnosed by a professional: Find a repair shop in your area