DESCRIPTION:Diesel exhaust fluid (DEF) pressure sensor – drift.
MONITORED PARAMETER:Diesel exhaust fluid (DEF) pressure.
TYPICAL ENABLING CONDITIONS:Pressure limiting unit off.
MONITOR SEQUENCE:Five hour engine off time.
EXECUTION FREQUENCY:Continuous when enabling conditions met.
VERIFICATION:SCR quantity test.
PROBABLE CAUSES:1. DEF metering unit pressure sensor.2. DEF metering unit pressure sensor connector/harness.3. Flush DEF metering system.
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