I have a p2403 fault

P1495 Leak detection pump switch or mechanical fault
Possible Causes
GOOD TRIP EQUAL TO ZERO
LDP VACUUM SUPPLY
LEAK DETECTION PUMP
(K107) LDP SWITCH SENSE CIRCUIT OPEN
(K107) LDP SWITCH SENSE CIRCUIT SHORTED TO GROUND
PCM

these links can assist you P240c Evaporative Emission System Leak Detection Pump Heater Control... Definition of check engine code P240C http://www.carobdcode.com/p240c-jaguar-evaporative-emission-evap-system-leak-detection-pump-heater-control-circuit-high

Trouble Code: P2404 (2.0L L4 VIN 5 Automatic CVT)
Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance
Number of Trips to Set Code: 1
Trouble Code Conditions:
EVAP vent valve stuck open: EVAP leak check pressure is lower than -0.14 kPa even if EVAP vent valve is operated from OFF (OPEN) to ON (CLOSE) with EVAP leak detection pump ON. EVAP vent valve stuck closed: EVAP leak check pressure is unstable (difference between maximum and minimum is 0.36 kPa or more) when EVAP vent valve is OFF (OPEN) with EVAP leak detection pump ON. EVAP leak detection pump stuck OFF: EVAP leak check pressure is higher than -0.14 kPa even if EVAP leak detection pump is ON. EVAP leak detection pump flow high: Reference pressure of EVAP leak check pressure is lower than specified value (depending on BARO) EVAP leak detection pump flow Low: Reference pressure of EVAP leak check pressure is higher than specified value (depending on BARO).
Possible Causes:

• EVAP leak detection pump (in EVAP leak check module) and/or its circuit
• EVAP vent valve (in EVAP leak check module) and/or its circuit
• EVAP leak check module and/or its circuit
• ECM

Evaporative Emission System Leak Detection Pump Control Circuit High
OBD2 Check Engine Fault Codes Android Apps on Google Play

without knowing your make or model:

p1443
Evaporative Emission Control System Control Valve

audi
EGR Valve Position Sensor Signal Too Low

bmw
Leakage Diagnostic Pump Control Circuit Signal High

ford
EVAP Control System Purge Control Solenoid or Purge Control Valve Fault

hyundi
EVAP System Tank Cap Missing

infinity
Evaporative Emission Control System Control Valve

lexus
Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2

mazda
Evaporative Emission Control System Large leak detected

mitsubishi
EVAP Purge Control Valve 2 Circuit Malfunction

nissan
Evaporative Emission Control System Control Valve

suburu
Evaporative Emission Control System Vent Control Function Problem

suzuki
EVAP Purge Control Valve Malfunction- Stuck Open

toyota
Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2

volkswagon
EGR Valve Position Sensor Signal Too Low

The code is telling you that you have a problem with the pump.

DTC P1495 - LEAK DETECTION PUMP SOLENOID CIRCUIT
WHEN MONITORED Ignition on and battery voltage greater than 10.4 volts .
SET CONDITION The state of the solenoid circuit does not change.
POSSIBLE CAUSES Fused ignition switch output circuit open
Leak detection pump defective LDP solenoid circuit wiring harness observable def LDP solenoid ckt wiring harness intermittent def LDP solenoid control circuit short to ground Leak detection pump solenoid control circuit open Powertrain control module defective

During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement.

The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.

NOTE: VERIFY ALL RELATED SUPPLY VACUUM LINE ROUTINGS FOR PINCHES, KINKS, OR DISCONNECTION'S BEFORE REPLACING LDP SYSTEM COMPONENTS.

Hope this helps, also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

That is a problem in the evaporative emission control system.
Could be anything causing it
Clogged filter in the charcoal canister
A leak in one of the vacuum lines
The purge valve not working,,,etc.
The best thing is to take it and have it checked out, they might have to do a smoke test to find the problem.
All they do is inject smoke into the system, if there is a leak the smoke will come out of it. All it takes is a pin hole in these emission systems to screw it all up.

P0446 Evaporative Emission System Vent Control Circuit.
The following are descriptions of all Evaporative possible codes:

P0441 Evaporative Emission System Incorrect Purge Flow
P0442 Evaporative Emission System Leak Detected (small leak)
P0443 Evaporative Emission System Purge Control Valve Circuit
P0444 Evaporative Emission System Purge Control Valve Circuit Open
P0445 Evaporative Emission System Purge Control Valve Circuit Shorted
P0446 Evaporative Emission System Vent Control Circuit
P0447 Evaporative Emission System Vent Control Circuit Open
P0448 Evaporative Emission System Vent Control Circuit Shorted
P0449 Evaporative Emission System Vent Valve/Solenoid Circuit
P0450 Evaporative Emission System Pressure Sensor/Switch
P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance
P0452 Evaporative Emission System Pressure Sensor/Switch Low
P0453 Evaporative Emission System Pressure Sensor/Switch High
P0454 Evaporative Emission System Pressure Sensor/Switch Intermittent
P0455 Evaporative Emission System Leak Detected (large leak)
P0456 Evaporative Emission System Leak Detected (very small leak)
P0457 Evaporative Emission System Leak Detected (fuel cap loose/off)
P0458 Evaporative Emission System Purge Control Valve Circuit Low
P0459 Evaporative Emission System Purge Control Valve Circuit High
---
At least the cap isn't loose for the gas tank.

I would clear the code with an OBD-II Scanner 'erase code' button, and see how long it takes for it to come back.

DTC P1495 - Leak Detection Pump Solenoid Circuit

WHEN MONITORED: Immediately after a cold start, with battery/ambient temperature between 4.4 °C (40 °F) . F and 32 °C (90 °F) . Coolant temperature within -12 °C (10 °F) of battery/ambient

SET CONDITION: The state of the solenoid circuit does not match the PCM's desired state.

POSSIBLE CAUSES:
* Wiring Harness Intermittent
* Leak Detection Pump
* Fused Ignition Switch Output
* LDP Solenoid Control Circuit Shorted To Ground
* LDP Solenoid Control Circuit Open
* PCM

Leak Detection Pump System
The evaporative emission system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, even small ones, can allow fuel vapors to escape into the atmosphere. Government regulations require on-board testing to make sure that the evaporative (EVAP) system is functioning properly. The leak detection system tests for EVAP system leaks and blockage. It also performs self-diagnostics. During self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air that leaks out. The PCM determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.

SYMPTOM: P1490-LOW SPEED FAN CONTROL RELAY CIRCUIT
WHEN MONITORED: With the ignition ON. Battery voltage greater than 10 volts .

SET CONDITION: An open or shorted circuit is detected in the radiator fan relay control circuit.

POSSIBLE CAUSES:
* Low Speed Radiator Fan Relay Intermittent Operation
* Intermittent Condition
* Fused Ignition Switch Output Circuit
* Low Speed Radiator Fan Relay Resistance
* Low Speed Radiator Fan Relay Control Circuit Open
* Low Speed Radiator Fan Relay Control Circuit Short To Ground
* PCM


Notes
The Transmission/Transaxle Controller monitors the malfunction of sensors and actuators relating to Transmission/Transaxle Control. If any malfunction is detected, they inform the PCM by sending a signal - By illuminating the MIL and by setting the P0700 code.

P0700 means that a code has been set in the Transmission/Transaxle Controller. If P0700 is present, check for Transmission/Transaxle codes.

Hope helps (remember comment and rated this).

check ur gas cap for tight and proper seal that is the most common problem for the the evap codes if cap is good check fuel and vent lines for damage or leaks from gas cap under vehicle up to engine compartment