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Home >> Mazda >> 1999 >> B2500 SX, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Controls - Self-Diagnostics - EEC-V - 6.8L (99S E Series & 99S F350 To F550)) >> Self-Diagnostic System >> Diagnostic Trouble Codes >> KOEO & KOER DTCs

KOEO & KOER DTCs

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These DTCs indicate faults are present at time of testing. A hard fault may cause SERVICE ENGINE SOON, CHECK ENGINE or Malfunction Indicator Light (MIL) to go on and remain on until fault is repaired. If KOEO or KOER DTCs are retrieved during KOEO ON-DEMAND SELF-TEST or KOER ON-DEMAND SELF-TEST, use DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS  to find appropriate system test to perform.

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