Volvo

Volvo All Engines (2013 Emissions) Fault Code: P20A673 PID: ACM Reductant Injection Air Pressure Control Valve Control

Circuit description
This function is used to calculate the EGR Mass Flow. The Engine Control Module (ECM) monitors the EGR differential pressure sensor and the EGR temperature sensor after cooler and uses these signals to calculate the EGR Mass Flow data.

Conditions for diagnostic trouble code (DTC)
The air valve is controlled to open position
Pressure below normal

Probable cause
1) Leakage from air lines
2) Air supply
3) Air Cleaner (ACL)
4) Air Valve

Detailed information
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive

Volvo All Engines (2013 Emissions) Fault Code: P20A900 PID: ACM Reductant Injection Air Pressure Control Valve Circuit High

Conditions for diagnostic trouble code (DTC)
The voltage at pin A174.A:21 is above normal value

Diagnostic operating conditions
Ignition key in ON position

Observable symptoms
Uncontrolled air consumption

Probable cause
1) Short circuit to higher voltage
2) Connector
3) Wiring harness
4) Actuator
5) Aftertreatment Control Module (ACM)

Volvo All Engines (2013 Emissions) Fault Code: P20AA00 PID: ACM Reductant Injection Air Pressure Control Valve Stuck Open

Circuit description
This function is used to calculate the EGR Mass Flow. The Engine Control Module (ECM) monitors the EGR differential pressure sensor and the EGR temperature sensor after cooler and uses these signals to calculate the EGR Mass Flow data.

Conditions for diagnostic trouble code (DTC)
The air valve is controlled to closed position
The DEF and the air pressure sensors measure pressure

Observable symptoms
Constant air purge of Aftertreatment DEF Line(s)

Probable cause
1) Reductant Injection Air Pressure Control Valve Control
2) Nozzle

Detailed information
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive

Volvo All Engines (2013 Emissions) Fault Code: P20AB00 PID: ACM Reductant Injection Air Pressure Control Valve Stuck Closed

Circuit description
This function is used to calculate the EGR Mass Flow. The Engine Control Module (ECM) monitors the EGR differential pressure sensor and the EGR temperature sensor after cooler and uses these signals to calculate the EGR Mass Flow data.

Conditions for diagnostic trouble code (DTC)
The air valve is controlled to open position
Pressure below normal

Probable cause
1) Leakage from air lines
2) Air supply
3) Air Cleaner (ACL)
4) Air Valve

Detailed information
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive

Volvo All Engines (2013 Emissions) Fault Code: P20B100 PID: ACM Reductant Heater Coolant Control Valve Control

Circuit description
This diagnostic trouble code (DTC) indicates malfunction in the aftertreatment diesel exhaust fluid (DEF) tank heater valve or related wiring. The function of the aftertreatment DEF tank heater valve is to allow engine coolant flow to the aftertreatment DEF tank heater element which keeps the DEF from freezing. Frozen DEF may result in no DEF dosing which causes limited vehicle operation.

Conditions for diagnostic trouble code (DTC)
Open circuit

Observable symptoms
Aftertreatment diesel exhaust fluid (DEF) temperature too low
Possible engine de-rate

Probable cause
1) Open circuit, Control wire (-)
2) Open circuit, Common voltage supply
3) Wiring harness
4) Aftertreatment diesel exhaust fluid (DEF) tank heater valve

Volvo All Engines (2013 Emissions) Fault Code: P20B111 PID: ACM Reductant Heater Coolant Control Valve Control

Circuit description
This diagnostic trouble code (DTC) indicates malfunction in the aftertreatment diesel exhaust fluid (DEF) tank heater valve or related wiring. The function of the aftertreatment DEF tank heater valve is to allow engine coolant flow to the aftertreatment DEF tank heater element which keeps the DEF from freezing. Frozen DEF may result in no DEF dosing which causes limited vehicle operation.

Conditions for diagnostic trouble code (DTC)
The voltage at pin A137.A:4 is below normal value

Observable symptoms
Aftertreatment diesel exhaust fluid (DEF) temperature too low
Possible engine de-rate

Probable cause
1) Short circuit to ground, Control wire (-)
2) Short circuit to ground, Common voltage supply
3) Wiring harness
4) Aftertreatment diesel exhaust fluid (DEF) tank heater valve
5) Aftertreatment Control Module (ACM)

Volvo All Engines (2013 Emissions) Fault Code: P20B112 PID: ACM Reductant Heater Coolant Control Valve Control

Circuit description
This diagnostic trouble code (DTC) indicates malfunction in the aftertreatment diesel exhaust fluid (DEF) tank heater valve or related wiring. The function of the aftertreatment DEF tank heater valve is to allow engine coolant flow to the aftertreatment DEF tank heater element which keeps the DEF from freezing. Frozen DEF may result in no DEF dosing which causes limited vehicle operation.

Conditions for diagnostic trouble code (DTC)
Short circuit to battery voltage

Probable cause
1) Connector
2) Wiring harness
3) Aftertreatment diesel exhaust fluid (DEF) tank heater valve
4) Dosage electronic control unit (ECU), pump unit

Volvo All Engines (2013 Emissions) Fault Code: P20B113 PID: ACM Reductant Heater Coolant Control Valve Control

Circuit description
This diagnostic trouble code (DTC) indicates malfunction in the aftertreatment diesel exhaust fluid (DEF) tank heater valve or related wiring. The function of the aftertreatment DEF tank heater valve is to allow engine coolant flow to the aftertreatment DEF tank heater element which keeps the DEF from freezing. Frozen DEF may result in no DEF dosing which causes limited vehicle operation.

Conditions for diagnostic trouble code (DTC)
Open circuit

Observable symptoms
Aftertreatment diesel exhaust fluid (DEF) temperature too low
Possible engine de-rate

Probable cause
1) Open circuit, Control wire (-)
2) Open circuit, Common voltage supply
3) Wiring harness
4) Aftertreatment diesel exhaust fluid (DEF) tank heater valve