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.
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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.
P1423FUEL TANK GROSS LEAK, OR A FUEL CAP BINDING UPON INSTALLATION OR REMOVAL
Manufacturer communications
8Original wording in English
TOYOTA
TOYOTA: METER, GAUGE, DISPLAY. SOME VEHICLES MAY EXHIBIT A MIL ON CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P1423, OR A FUEL CAP BINDING UPON INSTALLATION OR REMOVAL. *PE UPDATED 5/16/11. *PE
LEXUS
LEXUS: METER/GAUGE/DISPLAY. SOME VEHICLES MAY EXHIBIT A MIL ON CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P1423 - FUEL TANK GROSS LEAK, OR A FUEL CAP BINDING UPON INSTALLATION OR REMOVAL. *PE
LEXUS
LEXUS: SOME VEHICLES MAY EXHIBIT A MIL ON CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P1423-FUEL TANK GROSS LEAK, OR A FUEL CAP BINDING UPON INSTALLATION OR REMOVAL. MODELS INCLUDE 2008-2009 LS600H. *PE
AUDI
MIL ON (DTC'S P0300, P0411, P1128, P1130, P1411, P1423). THIS COULD BE CAUSED BY A CRACKED OR BROKEN VACUUM HOSE. *KB
Check vehicle applicability
27A 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.
EGI Functionality Test Failed
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.