![]() The pressure in the main fuel line isħ00 kPa (100 psi) greater than the desired pressure. The pressure in the main fuel line is greater than 200 kPa (29 psi) for at least 4 seconds. The ECM is commanding the main fuel control valve to close. The ECM is commanding the fuel enable valve to open. One of the following conditions has occurred: Table 1 Diagnostic Trouble Codes for Problems With The Fuel Pressure for the ARDĪftertreatment #1 Fuel Pressure #1 : High - Moderate Severity (2) Table 1 lists the diagnostic codes for the fuel pressure for the ARD. The ECM sets a diagnostic code if there is a problem with the fuel pressure for the ARD. The Engine Control Module (ECM) monitors the fuel pressure for the Aftertreatment Regeneration Device (ARD).
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