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Turn the key on and off three (3) times. Each time allow 5 seconds in the "On" state.Ĭheck codes with NGS Tester by performing the KOEO On-Demand Self-Test. Is the customer concerned with the vehicle cranking good but not starting? If yes, go to Step 4. If no, diagnose as per the PC/ED based on customer concern and go to Step 5.Ĭheck if glow plug relay is functioning. If yes, refer to the appropriate year Econoline or Super Duty F-Series Workshop Manual for other possible no start conditions. If no, service the glow plug relay. Continue with the remaining Steps. Perform all Key On Engine Off (KOEO) tests with New Generation Star (NGS) Tester. If codes other than P1298 are retrieved, service all non-P1298 codes as per the Powertrain Control/Emissions Diagnosis (PC/ED) Service Manual and go to Step 5. If P1298 is the only code retrieved, go to Step 3 and continue. Verify battery voltage is greater than 10 volts. The Malfunction Indicator Lamp (MIL) may illuminate with a false Diagnostic Trouble Code (DTC) P1298 (Injector Drive Module (IDM) failure). This may be due to circuit tolerance in the IDM setting DTC P1298 if the battery voltage is low. Vehicle or IDM performance is not affected by this false DTC.ĭiagnose customer concern and identify problem area. Refer to the following Service Procedure for details. MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED - FALSE DIAGNOSTIC TROUBLE CODE (DTC) P1298 STORED IN MEMORY - VEHICLES BUILT THROUGH WITH 7.3L DIESEL ENGINEįORD: 1998-1999 ECONOLINE 1999 SUPER DUTY F SERIESĪrticle 99-13-2 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet. bank 2 with low side shorts P1297 Injector high sides shorted together P1298 IDM failure P1299 Cylinder head over-temperature. LAMP - MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED - FALSE DIAGNOSTIC TROUBLE CODE (DTC) P1298 STORED IN MEMORY - VEHICLES BUILT THROUGH WITH 7.3L DIESEL ENGINE P1232 Fuel pump speed primary circuit malfunction P1233 Fuel pump driver module off line P1234 Fuel pump driver module off line P1235 Fuel pump control out of range P1236 Fuel. Engine Control Module: Customer Interest Engine Control - MIL ON, False DTC P1298