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Home >> Mazda >> 2007 >> B4000 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1127: Ho2S-12 Heater (Rear) >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Mazda B4000, 2003 Mazda B3000, and 2003 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.

With KOEO, access and observe the following PIDs:

Turn ignition off. If all PIDs indicate ON, perform KOER Self-Test. If all PIDs do not indicate ON, operate engine until all PIDs indicate ON. Perform KOER Self-Test.

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