Case IH 3142 – Engine Control Module (ECM) / EDC (Electronic Diesel Control): High Pressure Test - Test Active

This is an informational or historical code logged by the system when a technician actively initiates a high-pressure fuel system test using the manufacturer's Electronic Service Tool (EST). It is not a component failure.

• Magnum 235-340 (Series 4)
• Steiger (350 to 600 HP)
• Puma series
• Farmall 115U
• 580 Super N Tractor Loader Backhoe

1. 1

   Connect the CNH Electronic Service Tool (EST) to the machine's diagnostic port.

2. 2

   Check the EDC for any other active fuel-related fault codes (such as low/high fuel rail pressure or metering unit faults).

3. 3

   If 3142 is the only code present, recognize that it was simply left over from a previous diagnostic session where the high-pressure fuel test was run.

1. 1

   Turn key ON

   Turn the key to the ON position (engine off).

2. 2

   Connect EST

   Connect the CNH EST laptop to the diagnostic connector.

3. 3

   Navigate to EDC

   Navigate to the Engine (EDC) fault code screen.

4. 4

   Clear codes

   Select the option to clear inactive/historical fault codes.

5. 5

   Verify code clearance

   Cycle the key off for 30 seconds, then start the engine to verify the code does not return (it will not return unless the high-pressure test is manually initiated again).