DESCRIPTION:Diesel exhaust fluid (DEF) coolant valve circuit failed open. MONITORED PARAMETER:DEF coolant valve. TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 10% VERIFICATION:Engine Idle: One minute. NOTE: If code not active, release vehicle to customer. PROBABLE CAUSES:1. DEF coolant valve harness connector.2. Wiring between DEF coolant valve harness connector and the 120-pin ECM connection.

DESCRIPTION:Improper diesel exhaust fluid (DEF) quality final warning. MONITORED PARAMETER:DEF quality TYPICAL ENABLING CONDITIONS:DEF refill event detected. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two hours DASH LAMPS:1. MIL2. CEL3. DEF Lamp flash ENGINE REACTION:None VERIFICATION:Parked regeneration PROBABLE CAUSES:1. DEF contaminated, drain & flush system.2. DEF pressure sensor.3. DEF pressure sensor connector/harness.4. DEF supply & air lines leaking/kinked.5. DEF temperature sensor.6. DEF temperature sensor connector/harness.7. Perform stationary regen.

DESCRIPTION:Improper diesel exhaust fluid (DEF) quality warning. MONITORED PARAMETER:DEF quality TYPICAL ENABLING CONDITIONS:DEF refill event detected. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two hours DASH LAMPS:1. MIL2. CEL3. DEF Lamp flash ENGINE REACTION:None VERIFICATION:Parked regeneration PROBABLE CAUSES:1. DEF contaminated, drain & flush system.2. DEF pressure sensor.3. DEF pressure sensor connector/harness.4. DEF supply & air lines leaking/kinked.5. DEF temperature sensor.6. DEF temperature sensor connector/harness.7. Perform stationary regen.

DESCRIPTION:Improper diesel exhaust fluid (DEF) quality warning. MONITORED PARAMETER:DEF quality TYPICAL ENABLING CONDITIONS:DEF refill event detected. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two hours DASH LAMPS:1. MIL2. CEL3. DEF Lamp Flash ENGINE REACTION:None VERIFICATION:Parked regeneration PROBABLE CAUSES:1. DEF contaminated, drain & flush system.2. DEF pressure sensor.3. DEF pressure sensor connector/harness.4. DEF supply & air lines leaking/kinked.5. DEF temperature sensor.6. DEF temperature sensor connector/harness.7. Perform stationary regen.

DESCRIPTION:Improper diesel exhaust fluid (DEF) quality. MONITORED PARAMETER:DEF quality TYPICAL ENABLING CONDITIONS:DEF refill event detected. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two hours DASH LAMPS:1. MIL2. CEL3. DEF lamp flash ENGINE REACTION:None VERIFICATION:Parked regeneration PROBABLE CAUSES:1. DEF contaminated, drain & flush system.2. DEF pressure sensor.3. DEF pressure sensor connector/harness.4. DEF supply & air lines leaking/kinked.5. DEF temperature sensor.6. DEF temperature sensor connector/harness.7. Perform stationary regen.