Volvo

Volvo All Engines (2013 Emissions) Fault Code: P20FE00 PID: ACM Aftertreatment Reagent Pump Control Build Up Failure

Circuit description
The aftertreatment control module (ACM) monitors the pressure build up in the diesel exhaust fluid (DEF) dosing system. This diagnostic function checks the time it takes for the DEF dosing pressure to reach more than 650 kPa (94 psi). If the pressure is not reached in 20 minute(s) this DTC will be set.

Conditions for diagnostic trouble code (DTC)
Aftertreatment DEF Dosing Pressure Lower than expected

Observable symptoms
No aftertreatment diesel exhaust fluid (DEF) dosage
Engine de-rated

Probable cause
1) Empty tank
2) Frozen aftertreatment diesel exhaust fluid (DEF)
3) DEF Supply from Aftertreatment DEF Tank disconnected
4) Aftertreatment DEF Line(s) Leakage
5) Aftertreatment DEF dosing valve Leakage
6) Aftertreatment Diesel Exhaust Fluid (DEF) Pump Leakage
7) Damaged sending unit inside the aftertreatment DEF tank
8) Damaged or clogged filter
9) Aftertreatment DEF Dosing Pressure Sensor, Incorrect value
10) Blocked DEF tank ventilation hose
11) Air in the system
12) Crystallization inside the DEF pump
13) Low level in Aftertreatment diesel exhaust fluid (DEF) tank

Volvo All Engines (2013 Emissions) Fault Code: P20FE9A PID: EMS Reductant Metering Unit Performance

Circuit description
The DEF quality, level, and temperature sensor detects the concentration of fluid in the DEF tank. The sensor is connected to the DL7 data link which sends a signal to the Aftertreatment Control Module (ACM) and Engine Control Module (ECM). The relevant control module interprets the information and activates a lamp in the instrument cluster, inducement mode or both if necessary

Conditions for diagnostic trouble code (DTC)
Buffer control saturated high

Probable cause
1) DEF concentration, Aftertreatment Diesel Exhaust Fluid (DEF) quality
2) DEF quality, level and temperature sensor
3) Exhaust leakage
4) Defective SCR catalyst
5) B96B, NOx sensor
6) B96, NOx sensor

Detailed information
Max DEF dosing capability reached

Volvo All Engines (2013 Emissions) Fault Code: P210900 PID: EMS Throttle/Pedal Position Sensor “A” Minumum Stop Performance

An analog signal from the accelerator pedal is used to indicate a percent value of the accelerator pedal position. The signal is monitored by the Vehicle Electronic Control Unit (VECU) and communicated to the Engine Control Module (ECM) via the J1939 data link. Based on the signal, the ECM will request a certain engine torque. If the analog signal is too low or too high, the ECM instead uses the digital signal from the accelerator pedal’s idle validation switch to enable driving in limp home mode.

Conditions for diagnostic trouble code (DTC):
1) The vehicle electronic control unit (ECU) receives a lower level signal from the sensor that diverges from idle switch 1 and/or idle switch 2

Observable symptoms
1) The engine does not respond when accelerator pedal is pressed.

Probable cause
1) Connector
2) Faulty sensor
3) Vehicle Control Unit (VECU)
4) Wiring harness

Volvo All Engines (2013 Emissions) Fault Code: P213600 PID: EMS Throttle/Pedal Position Sensor/Switch “A”/”C” Voltage Correlation

The Idle Validation Switch is open at the idle position and transmits no voltage to the (VECU) Vehicle Electronic Control Unit. At approximately 1-13% pedal position the Idle Validation Switch closes and completes the circuit to the (VECU) Vehicle Electronic Control Unit.
The (VECU) Vehicle Electronic Control Unit then sends a voltage signal to the Engine Control Module (ECM) indicating accelerator pedal position. If both communication links (J1939, J1587) are faulty the pedal demand functionality enters limp-home. During limp-home the (IVS) Idle Validation Switch is used for ramping requested torque.

Conditions for diagnostic trouble code (DTC):
1) No signal : Idle validation switch IVS 1
2) 0-13% : Accelerator pedal

Observable symptoms
1) The engine does not respond when accelerator pedal is pressed.

Probable cause
1) Connector
2) Wiring harness between sensor connector and Engine Control Module (ECM)
3) Accelerator pedal
4) Vehicle Control Unit (VECU)

Volvo All Engines (2013 Emissions) Fault Code: P215A62 PID: EMS Vehicle Speed – Wheel Speed Correlation

This signal is sent from the (VECU) Vehicle Electronic Control Unit to the Cluster to present the actual vehicle speed. It is also used by the maximum speed limitation. The maximum speed limit can vary depending on customer option.

Conditions for diagnostic trouble code (DTC):
1) The speed signal from the tachograph is updated incorrectly

Probable cause
1) Wiring harness
2) Data link
3) Tachograph
4) Faulty Calibration Numbers

Volvo All Engines (2013 Emissions) Fault Code: P215A64 PID: EMS Vehicle Speed – Wheel Speed Correlation

This signal is sent from the (VECU) Vehicle Electronic Control Unit to the Cluster to present the actual vehicle speed. It is also used by the maximum speed limitation. The maximum speed limit can vary depending on customer option.

Conditions for diagnostic trouble code (DTC):
1) The speed signal received from speed sensor and the speed signal received from ABS differs too much
2) Missing message, Vehicle speed sensor
3) Missing message, ABS Control unit

Probable cause
1) Wrong parameter settings
2) Connector
3) Wiring harness, defective
4) Speed sensor

Detailed information
1) Check that no diagnostic trouble codes (DTCs) are set for the ABS/EBS system

Volvo All Engines (2013 Emissions) Fault Code: P216300 PID: EMS Throttle/Pedal Position Sensor “A” Maximum Stop Performance

An analog signal from the accelerator pedal is used to indicate a percent value of the accelerator pedal position. The signal is monitored by the Vehicle Electronic Control Unit (VECU) and communicated to the Engine Control Module (ECM) via the J1939 data link. Based on the signal, the ECM will request a certain engine torque. If the analog signal is too low or too high, the ECM instead uses the digital signal from the accelerator pedal’s idle validation switch to enable driving in limp home mode.

Conditions for diagnostic trouble code (DTC):
1) The vehicle electronic control unit (ECU) receives a higher level signal from the sensor that diverges from idle switch 1 and/or idle switch 2
2) The engine does not respond when accelerator pedal is pressed.

Probable cause
1) Connector
2) Faulty sensor
3) Vehicle Control Unit (VECU)
4) Wiring harness

Volvo All Engines (2013 Emissions) Fault Code: P218F92 PID: ACM Reductant No Flow Detected

Circuit description
The aftertreatment control module (ACM) uses the aftertreatment diesel exhaust fluid (DEF) dosing pressure sensor value to adjust and maintain DEF pressure at the DEF dosing valve by controlling DEF pump speed. If the pressure decreases below expected value when the pump is in initial pressure build-up mode or if the pressure increases above expected value when pump is in idle speed mode, the ACM considers DEF pressure outside of normal operating range and indicates a malfunction in a DEF dosing pressure sensor.

Observable symptoms
No aftertreatment diesel exhaust fluid (DEF) dosage

Probable cause
1) Restricted orifice in the aftertreatment fuel manifold
2) Damaged hoses and/or connections
3) Aftertreatment Diesel Exhaust Fluid (DEF) Pump