s60 p2402 high pump

1998v70xcbill · Post by **1998v70xcbill** » 01 Oct 2020, 21:46

I just got to fix a s60 t5 2014. It gave error p2402, my reader said high circuit for evap pump (leak detection pump), High can mean many things, not just high circuit resistance. It can also mean high current. I checked the fuse (maybe 39) 5 amp for sure. The relay is before the fuse. When I checked for 12v at the fuse (5A) it was there as soon as i opened the door. Ordered a new leak detection pump. Hard lines come off with strong pulling (lube could have helped) . Go on with lube, not so bad. Code gone, for now. Now waiting for large and small evap test to pass. nice car, Not mine.

Post by **jimmy57** » 01 Oct 2020, 22:26

In most common DTC lingo high would mean bad connection, bad part, broken wire. The module applies a 5V signal to many (most on that 2014) circuit legs and can detect 3 things: 1. short to ground when the circuit voltage is nearly 0V, 2. expected circuit voltage, something between .5 to 4.5V in huge number of cases, or 5V to System voltage indicating or short to battery voltage. "High" as the description will have checks for the component and then connections. A few circuits, very few, like the airbag and other pyrotechnic safety stuff, can detect the difference between open and short to system voltage but most lump open circuit and a short to something over 5V as the same code.

Post by **RickHaleParker** » 02 Oct 2020, 02:49

ECM-P240200 Evaporative Emission System Leak Detection Pump Control Circuit High.
General Failure Information. No sub type information, B5254T12.

Diagnostic trouble code (DTC) information ECM-P240200

Condition
The engine control module (ECM) checks the control signal to the leakage diagnosis pump.
The diagnostic trouble code is generated if the control module registers a fault in the control signal to the leakage diagnosis pump.

The diagnostic trouble code can be diagnosed when the ignition is on.

Substitute value
Leakage diagnosis interrupted.

Possible source

The signal cable is short-circuited to supply voltage.
Damage leakage diagnosis pump.

Fault symptom
Malfunction indicator lamp (MIL) lit.