Ford Escape: Engine Emission Control / Diagnosis and Testing - Crankcase Ventilation

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Pinpoint Tests

PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM

Introduction Normal Operation and Fault Conditions Refer to the DTC Fault Trigger Conditions. DTC Fault Trigger Conditions DTC Description Fault Trigger Condition PCM P04DB:00 Crankcase Ventilation System Disconnected: No Sub Type Information Sets when PCM detects the crankcase pressure sensor is disconnected. Verify the integrity of the PCV system. PCM P2282:00 Air Leak Between Throttle Body and Intake Valves Bank 1: No Sub Type Information Sets when PCM detects an air leak that exceeds a calibrated limit for greater than 5 seconds. If the airflow entering the engine exceeds the airflow through the throttle, a leak is detected and this diagnostic fails. Verify the integrity of the PCV system. Refer to Positive Crankcase Ventilation (PCV) System for aditional information. Possible Sources Crankcase pressure sensor circuitry concern Intake air system concern Vacuum hose Oil level indicator O-ring seal Oil cap PCV hose PCV valve (6A666) Crankcase pressure sensor (6758) PCM (12A650)