Volvo

Volvo All Engines (2013 Emissions) Fault Code: P200200 PID: EMS Diesel Particulate Filter Efficiency Below Threshold (Bank 1)

Circuit description
This diagnostic function evaluates if the catalyst is converting the fuel from the aftertreatment hydrocarbon doser into enough heat at the beginning of the aftertreatment diesel particulate filter (DPF) regeneration. The aftertreatment DPF intake temperature sensor (post catalyst) should steadily increase and stabilize once the desired temperatures are met.

Observable symptoms
None

Probable cause
1) Exhaust leakage prior to the aftertreatment diesel particulate filter (DPF) unit
2) Aftertreatment DPF Differential Pressure Sensor
3) DPF Sensor lines connected incorrectly
4) Differential pressure sensor lines plugged or damaged
5) Aftertreatment Diesel Particulate Filter (DPF)

Volvo All Engines (2013 Emissions) Fault Code: P202D7A PID: ACM Aftertreatment Reagent Pressure Leakage

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.

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

Observable symptoms
No aftertreatment diesel exhaust fluid (DEF) dosage

Probable cause
1) Empty tank
2) Aftertreatment DEF Line(s) Leakage
3) Aftertreatment DEF dosing valve Leakage
4) Aftertreatment Diesel Exhaust Fluid (DEF) Pump Leakage
5) Aftertreatment Diesel Exhaust Fluid (DEF) Pump Main Filter
6) Aftertreatment Diesel Exhaust Fluid (DEF) Pump Inlet Pre-filter
7) Combined tank unit Filter screen
8) Contamination or debris inside DEF tank

Detailed information
Possible engine de-rate

Volvo All Engines (2013 Emissions) Fault Code: P203111 PID: ACM Exhaust Gas Temperature Sensor Bank 1 Sensor 2

Circuit description
This diagnostic function indicates malfunction at the exhaust gas temperature (EGT) sensor. The purpose of the exhaust gas sensor is to contribute the relevant temperatures required for the temperature regulated aftertreatment diesel particulate filter regeneration control. A faulty EGT sensor can result with a failed aftertreatment (DPF) regeneration.

Conditions for diagnostic trouble code (DTC)
The voltage at pin A137:34 is less than 0.147705?V

Diagnostic operating conditions
Ignition key in ON position

Observable symptoms
Regeneration not possible

Probable cause
1) Wiring harness between component connector and electronic control unit (ECU) connector
2) Short circuit to ground, Signal wire
3) Aftertreatment Control Module (ACM)

Volvo All Engines (2013 Emissions) Fault Code: P203115 PID: ACM Exhaust Gas Temperature Sensor Bank 1 Sensor 2

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A137:34 is more than 4.84?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Regeneration not possible

Probable cause
1) Connector
2) Open circuit, Signal wire
3) Open circuit, Ground wire
4) Short circuit to voltage supply, signal wire
5) Wiring harness between component connector and electronic control unit (ECU) connector
6) Exhaust Gas Temperature (EGT) Sensor
7) Aftertreatment Control Module (ACM)

Volvo All Engines (2013 Emissions) Fault Code: P203200 PID: ACM Exhaust Gas Temperature Circuit Low (Bank 1 Sensor 2)

This diagnostic function indicates malfunction at the exhaust gas temperature (EGT) sensor. The purpose of the exhaust gas sensor is to contribute the relevant temperatures required for the temperature regulated aftertreatment diesel particulate filter regeneration control. A faulty EGT sensor can result with a failed aftertreatment (DPF) regeneration.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A137:34 is less than 1.08?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Regeneration not possible

Probable cause
1) Wiring harness between component connector and electronic control unit (ECU) connector
2) Short circuit to ground, Signal wire
3) Aftertreatment Control Module (ACM)

Volvo All Engines (2013 Emissions) Fault Code: P203701 PID: ACM Reductant Injection Air Pressure Sensor “A”

Conditions for diagnostic trouble code (DTC)
General Electrical Failure

Diagnostic operating conditions
Ignition key in ON position

Probable cause
1) Aftertreatment system Wiring harness
2) Reductant Injection Air Pressure Sensor “A”
3) Aftertreatment Control Module