Discovery II
ENGINE MANAGEMENT SYSTEM - V8
DESCRIPTION AND OPERATION 18-2-39
Should a malfunction of the component occur the following fault codes may be evident and can be retrieved by
TestBook.
Evaporative emissions
Refer to Emissions section for description of the evaporative emissions system components.
EMISSION CONTROL - V8, DESCRIPTION AND OPERATION, Evaporative Emission Control System.
Secondary air injection (NAS only)
Refer to Emissions section for description of the secondary air injection system components.
EMISSION CONTROL - V8, DESCRIPTION AND OPERATION, Secondary Air Injection System.
Fuel tank pressure sensor (NAS only)
Refer to Fuel Delivery section for description of the fuel system components.
FUEL DELIVERY SYSTEM - V8, DESCRIPTION AND OPERATION, Description.
Refer to Emissions section for description of the fuel tank pressure sensor.
EMISSION CONTROL - V8, DESCRIPTION AND OPERATION, Evaporative Emission Control System.
P Code
J2012 Description
Land Rover Description
P1230
Fuel pump relay malfunction
Fuel pump relay open circuit - not the fuel pump
P1231
Fuel pump relay circuit low
Fuel pump relay short circuit to battery supply - not the
fuel pump
P1232
Fuel pump relay circuit high
Fuel pump relay short circuit to earth - not the fuel pump