P2636 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P2636 – Fuel Pump ‘B’ Low Flow/Performance

 

P2636 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P2636 Possible Causes

 

Faulty fuel pump relay,Faulty fuel pump,Fuel pump harness is open or shorted,Fuel pump circuit poor electrical connection,Faulty fuel pump control module (if applicable)

 

P2636 Description

 

The Engine Control Module (ECM) monitors the Fuel Pump Control Circuit. The ECM sets the OBDII code when the Fuel Pump Control Circuit is out of factory specifications.