Failed fuel tank pressure relief valve solenoid or valve assembly; Damaged, corroded, or disconnected electrical connector at the relief valve; Open or shorted wiring in the relief valve circuit, often from chafing or rodent damage; Blown fuse or poor ground connection serving the evaporative emissions circuit; Sticking or mechanically jammed relief valve due to debris or carbon buildup; Engine control module software or internal driver fault, though this is less common

DTC codes / Jaguar codes / P1453

P1453 · JaguarFuel Tank Pressure Relief Valve Malfunction

Q: What does code P1453 mean?

Fuel Tank Pressure Relief Valve Malfunction. P1453 on a Jaguar indicates that the fuel tank pressure relief valve circuit has reported a malfunction to the engine control module. The module monitors the valve's electrical circuit and expected pressure changes during the evaporative emissions self-test, and it sets this code when the valve fails to respond or the circuit is out of range.

P1453 on a Jaguar indicates that the fuel tank pressure relief valve circuit has reported a malfunction to the engine control module. The module monitors the valve's electrical circuit and expected pressure changes during the evaporative emissions self-test, and it sets this code when the valve fails to respond or the circuit is out of range.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
A faint fuel or hydrocarbon smell around the rear of the vehicle after refuelling
Slight difficulty or hesitation when refuelling, such as the pump nozzle clicking off early
Intermittent evap system monitor 'not ready' status on emissions test scanners
Rough idle or minor driveability complaints in rare cases where tank pressure control is affected

Common causes, most likely first

Failed fuel tank pressure relief valve solenoid or valve assembly
Damaged, corroded, or disconnected electrical connector at the relief valve
Open or shorted wiring in the relief valve circuit, often from chafing or rodent damage
Blown fuse or poor ground connection serving the evaporative emissions circuit
Sticking or mechanically jammed relief valve due to debris or carbon buildup
Engine control module software or internal driver fault, though this is less common

How to diagnose and fix it

Connect a scan tool and retrieve all stored and pending codes, then inspect freeze-frame data for the evap system
Visually inspect the fuel tank pressure relief valve, its connector, and the wiring harness for damage or corrosion
Test the relief valve solenoid resistance and compare it to the Jaguar specification for your model
Check for battery voltage and ground at the valve connector with the key on, using a multimeter or test light
Command the relief valve on and off with the scan tool and listen for an audible click or verify pressure change
If the circuit tests good but the valve does not respond, remove and bench-test the valve for mechanical operation
Clear the code and run the evap monitor to confirm the repair, repeating diagnosis if the code returns

Relief valve faults that mimic other evap codes

A stuck-open relief valve can cause a large evap leak code to set alongside P1453, leading some technicians to replace the gas cap or purge valve unnecessarily.
Jaguar's evap monitor only runs under specific fuel level and temperature conditions, so a P1453 may not reappear immediately after clearing, making verification drives essential.
Corrosion inside the relief valve connector is a frequent cause on older Jaguar models, and the valve itself often tests fine once the connector is cleaned.
A failed relief valve can prevent the fuel tank from venting properly, causing pressure to build and sometimes triggering a fuel filler neck restriction or early pump shutoff.
Aftermarket replacement valves with incorrect resistance can set P1453 again even though the part is new, so matching the original Jaguar specification matters.

Can I keep driving with P1453?

The vehicle is generally safe to drive with P1453 because it affects the evaporative emissions system rather than engine operation, but avoid topping off the fuel tank and have the fault diagnosed promptly to prevent pressure-related refuelling issues.

Tools that help

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Guidance is general and written for Jaguar vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.