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OBDII Code List
P0603 1998 FORD F150

P0603 1998 FORD F150 - Powertrain Control Module KAM Test Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Loose or poor battery terminal connection
  • Low battery charge (Battery terminal corrosion)
  • ECM power supply circuit is open or shorted
  • ECM Programing
  • Faulty PCM
What does this mean?

Tech notes

Start by charging the vehicles battery and clean terminal, once the battery is charged and the terminals are clean and secure, erase code. If the code comes back ON you may have to reprogram or replaced ECM

Indicates the PCM has experienced an internal memory fault. However there are external items that can cause this DTC.

What does this mean?

When is the code detected?

Indicates the ECM has experienced an internal memory fault.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine may not start

P0603 1998 FORD F150 Description

Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc.
OBDII Code P0603 1998 Ford F150 - Powertrain Control Module KAM Test Error -

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Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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Posted and Edit by 06-14-2015

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