DTC P204F:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)]

id0102k1722100

DTC P204F:00

Urea pump performance problem problem

DETECTION CONDITION

•  The number of times the UREA pump is pumped reaches the specified number while the AdBlue^® is pumped by the UREA pump.

MONITORING CONDITIONS

•  Engine speed: 300 rpm or more

•  Exhaust gas temperature sensor No.5: 164.96 °C {328.93 °F} or more

•  Urea pump pressure: less than 620 kPa {6.32 kgf/cm², 89.9 psi}

•  The following DTCs are not detected:

―  Urea injector: P202E:00

―  Urea pump: P208B:00,P20E8:00, P20E9:00

•  Ignition switched ON (engine on)

•  Battery voltage: 10.9—16 V

Note

•  DTC P2BAF:00 is also stored in the PCM and the vehicle speed is restricted.

•  DTC P1640:00 is also stored in the PCM.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The check engine light illuminates if the dosing control unit detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the dosing control unit memory.

FAIL-SAFE FUNCTION

•  Restricts the maximum remaining distance to empty.

•  Limits the upper limit of the engine speed.

POSSIBLE CAUSE

•  Urea pump connectors or terminals malfunction

•  Dosing control unit connector or terminals malfunction

•  Short to ground in wiring harness between the following terminals:

―  Urea pump terminal A—dosing control unit terminal Y

―  Urea pump terminal B—dosing control unit terminal CN

―  Urea pump terminal C—dosing control unit terminal H

―  Urea pump terminal D—dosing control unit terminal I

•  Short to power supply in wiring harness between the following terminals:

―  Urea pump terminal A—dosing control unit terminal Y

―  Urea pump terminal B—dosing control unit terminal CN

―  Urea pump terminal C—dosing control unit terminal H

―  Urea pump terminal D—dosing control unit terminal I

•  Open circuit in wiring harness between the following terminals:

―  Urea pump terminal A—dosing control unit terminal Y

―  Urea pump terminal B—dosing control unit terminal CN

―  Urea pump terminal C—dosing control unit terminal H

―  Urea pump terminal D—dosing control unit terminal I

•  Urea pump clogging

•  Leakage or clogging between urea pump and urea injector

•  Urea pump malfunction

•  Urea injector malfunction

•  Dosing control unit malfunction

DTC P204F:00	Urea pump performance problem problem
DETECTION CONDITION	• The number of times the UREA pump is pumped reaches the specified number while the AdBlue^® is pumped by the UREA pump. MONITORING CONDITIONS • Engine speed: 300 rpm or more • Exhaust gas temperature sensor No.5: 164.96 °C {328.93 °F} or more • Urea pump pressure: less than 620 kPa {6.32 kgf/cm², 89.9 psi} • The following DTCs are not detected: ― Urea injector: P202E:00 ― Urea pump: P208B:00,P20E8:00, P20E9:00 • Ignition switched ON (engine on) • Battery voltage: 10.9—16 V Note • DTC P2BAF:00 is also stored in the PCM and the vehicle speed is restricted. • DTC P1640:00 is also stored in the PCM. Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the dosing control unit detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the dosing control unit memory.
FAIL-SAFE FUNCTION	• Restricts the maximum remaining distance to empty. • Limits the upper limit of the engine speed.
POSSIBLE CAUSE	• Urea pump connectors or terminals malfunction • Dosing control unit connector or terminals malfunction • Short to ground in wiring harness between the following terminals: ― Urea pump terminal A—dosing control unit terminal Y ― Urea pump terminal B—dosing control unit terminal CN ― Urea pump terminal C—dosing control unit terminal H ― Urea pump terminal D—dosing control unit terminal I • Short to power supply in wiring harness between the following terminals: ― Urea pump terminal A—dosing control unit terminal Y ― Urea pump terminal B—dosing control unit terminal CN ― Urea pump terminal C—dosing control unit terminal H ― Urea pump terminal D—dosing control unit terminal I • Open circuit in wiring harness between the following terminals: ― Urea pump terminal A—dosing control unit terminal Y ― Urea pump terminal B—dosing control unit terminal CN ― Urea pump terminal C—dosing control unit terminal H ― Urea pump terminal D—dosing control unit terminal I • Urea pump clogging • Leakage or clogging between urea pump and urea injector • Urea pump malfunction • Urea injector malfunction • Dosing control unit malfunction

Diagnostic Procedure

STEP	INSPECTION	RESULTS	ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the snapshot data on the repair order.	—	Go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT UREA PUMP CONNECTOR CONDITION • Switch the ignition off. • Disconnect the urea pump connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 11.
3		No	Go to the next step.
4	INSPECT DOSING CONTROL UNIT CONNECTOR CONDITION • Disconnect the dosing control unit connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 11.
4		No	Go to the next step.
5	INSPECT UREA PUMP CIRCUIT FOR SHORT TO GROUND • Verify that the urea pump and dosing control unit connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Urea pump terminal A ― Urea pump terminal B ― Urea pump terminal C ― Urea pump terminal D • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Urea pump terminal A—dosing control unit terminal Y • Urea pump terminal B—dosing control unit terminal CN • Urea pump terminal C—dosing control unit terminal I • Urea pump terminal D—dosing control unit terminal H If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 11.
5		No	Go to the next step.
6	INSPECT UREA PUMP CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the urea pump and dosing control unit connectors are disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the dosing control unit detecting an open circuit. • Measure the voltage at the following terminals (wiring harness-side): ― Urea pump terminal A ― Urea pump terminal B ― Urea pump terminal C ― Urea pump terminal D • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Urea pump terminal A—dosing control unit terminal Y • Urea pump terminal B—dosing control unit terminal CN • Urea pump terminal C—dosing control unit terminal I • Urea pump terminal D—dosing control unit terminal H If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 11.
7	INSPECT UREA PUMP CIRCUIT FOR OPEN CIRCUIT • Switch the ignition off. • Verify that the urea pump and dosing control unit connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Urea pump terminal A—dosing control unit terminal Y ― Urea pump terminal B—dosing control unit terminal CN ― Urea pump terminal C—dosing control unit terminal I ― Urea pump terminal D—dosing control unit terminal H • Is there continuity?	No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Urea pump terminal A—dosing control unit terminal Y • Urea pump terminal B—dosing control unit terminal CN • Urea pump terminal C—dosing control unit terminal I • Urea pump terminal D—dosing control unit terminal H If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 11.
7		Yes	Go to the next step.
8	INSPECT FOR AdBlue^® LEAKAGE FROM AdBlue^® LINE OR CLOGGING • Inspect the following AdBlue^® line for AdBlue^® leakage or clogging. ― Urea pump ― Between Urea pump and urea injector • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 11.
8		No	Go to the next step.
9	INSPECT UREA PUMP • Inspect the urea pump. (See UREA PUMP INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the urea pump, then go to step 11. (See UREA PUMP REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
9		No	Go to the next step.
10	INSPECT UREA INJECTOR • Inspect the urea injector. (See UREA INJECTOR INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the urea injector, then go to the next step. (See UREA INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
10		No	Go to the next step.
11	VERIFY THAT ENGINE CAN BE STARTED • Always reconnect all disconnected connectors. • Clear the DTC from the dosing control unit memory using the M-MDS. (See CLEARING DTC [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) Note • The engine cannot be restarted when the remaining distance to empty is 0 km {0 mile}. • Start the engine. • Can the engine be started?	Yes	Go to the next step.
11		No	Perform the “SCR INDUCEMENT INSPECTION SERVICE FUNCTION” using the M-MDS. (See SCR INDUCEMENT INSPECTION SERVICE FUNCTION [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) Note • When restriction of the remaining distance to empty is canceled, the SCR system warning light/SCR system warning indication turns off. Go to the next step.
12	IMPLEMENT THE REPEATABILITY VERIFICATION PROCEDURE • Always reconnect all disconnected connectors. • Perform compulsory diesel particulate filter regeneration. (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].) • Perform acceleration/deceleration 2 times to a vehicle speed of 80 km/h {50 mph}. • Leave for 2 min while idling. • Has the restriction of the remaining distance to empty been canceled?	Yes	Go to the next step.
12		No	Repeat the inspection from Step 11.
13	VERIFY DTC TROUBLESHOOTING COMPLETED • Retrieve the dosing control unit DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Is the same Pending DTC present?	Yes	Go to the next step.
13		No	Repeat the inspection from Step 1. • If the malfunction recurs, replace the dosing control unit. (See DOSING CONTROL UNIT REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) Go to the next step.
14	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)
14		No	DTC troubleshooting completed.