What isfalt code 25 for pajero io ,what causesfalt code 56 for pajero io,and fault code 78 for pajero io

the check light is reporting a serious problem and the ecm goes into limp mode to protect it .
check oil , water and have the fault codes read to find the fault

Code 78 APPS Main and Code 79 TPS Main are diagnostic trouble codes (DTCs) that can appear on a 1997 Mitsubishi Pajero. Code 78 APPS Main: This code indicates that the APPS (Air Pump System) Main relay is not working properly. The APPS relay is responsible for supplying power to the air pump, which is used to control the air-fuel mixture. Code 79 TPS Main: This code indicates that the TPS (Throttle Position Sensor) Main circuit is not working properly. The TPS sensor is responsible for sending information to the engine control unit (ECU) about the position of the throttle valve. If either of these codes appears, it is important to have the vehicle diagnosed by a qualified mechanic to determine the cause of the problem. The mechanic may need to test the APPS relay, the TPS sensor, or other components in the fuel system. Here are some possible causes of Code 78 APPS Main and Code 79 TPS Main: Faulty APPS relay: The APPS relay may be faulty and not be supplying power to the air pump properly. Faulty TPS sensor: The TPS sensor may be faulty and not be sending accurate information to the ECU about the position of the throttle valve. Clogged air filter: A clogged air filter can restrict airflow to the engine and cause the APPS relay to overheat and malfunction. Low fuel pressure: Low fuel pressure can cause the APPS relay to overheat and malfunction. Faulty wiring: The wiring to the APPS relay or TPS sensor may be damaged or corroded, causing the codes to appear. If you are experiencing problems with your 1997 Mitsubishi Pajero and either Code 78 APPS Main or Code 79 TPS Main appears, it is important to have the vehicle diagnosed by a qualified mechanic to determine the cause of the problem and to get it repaired as soon as possible.

indicates a vent problem
could be an EVAP system vent solenoid / valve
leave the cap off and run the test on the fuel pressure as what you have indicates that the pump is not providing sufficient volume to maintain pressure ( venting, pump problem , pressure regulator )

run fault codes and look for EVAP system not ventilating the tank properly , causing a drop in available fuel pressure by the fuel pump running in a vacuum

run fault codes and look for a TCM problem and a torque converter clutch solenoid/ servo failure. check for an accelerator position sensor fault as well

run the fault codes first
check to see if the timing belt is broken
check for faulty crank/cam position sensors
check that the immobilizer is operational

Since your check engine light is turn on, some fault code is stored in your PCM (computer), I suggest scanned the PCM to know exactly what fault code is there; with this code number we could send additional details and tips to solve it.

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mitsubishi grandis 1999 low fuel, it starts but cut out

78 APS (main) what does mean?