Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P1456EVAP CONTROL SYSTEM LEAKAGE [FUEL TANK SYSTEM]
P1456FUEL TANK SYSTEM
Manufacturer communications
10Original wording in English
ACURA
"SERVICE BULLETIN - THIS BULLETIN UPDATES THE TROUBLESHOOTING PROCEDURES FOR DTC P1456 (EVAP CONTROL SYSTEM LEAKAGE [FUEL TANK SYSTEM]) AND DTC P1457 (EVAP CONTROL SYSTEM LEAKAGE[EVAP CANISTER SYSTEM]). DEPENDING ON THE MODEL, THERE ARE TWO INDIVIDUAL PROCEDURES IN THIS BULLETIN."
HONDA
HONDA: TROUBLESHOOTING OF DIAGNOSTIC TROUBLE CODES (DTC) P1456 AND P1457. DEALERS ARE TO RUN EVAP FUNCTION TEST TO FIND IF THERE IS A LEAK SO THE VEHICLE CAN BE REPAIRED. *KB
ACURA
FUEL FILL CAP BINDS AND POSSIBLE MALFUNCTION INDICATOR LAMP (MIL) COMES ON WITH DIAGNOSTIC TROUBLE CODE (DTC) P1456. *MJ
HONDA
FUEL FILL CAP BINDS AND POSSIBLE MALFUNCTION INDICATOR LAMP COMES ON WITH DIAGNOSTIC TROUBLE CODE P1456. THIS BULLETIN SUPERSEDES 04-002, DATED 02/30/04. *TT
Check vehicle applicability
91A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Fuel Tank Temperature Sensor Circuit Malfunction
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.