DTC P2204:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)]

id0102k1726000

Note

• To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DESCRIPTION

Continuous monitoring of NOx sensor No.1 signal validity

DETECTION CONDITION

Determination conditions

•  The dosing control unit detects two times that the speed of the signal received from NOx sensor No.1 is slower than the target vehicle speed.

Preconditions

•  Target heat amount of NOx sensor: 44—1026 kJ

•  Battery voltage: 10.9—16.0 V

•  Exhaust gas temperature sensor No.5: 849.96 °C {1561.9 °F} or less

•  CAN communication is normal at engine start for a continuous 20 s or more

•  Fuel injection amount: -0.4—11.2 mg/stroke

•  Air/fuel ratio of NOx sensor No.1: 1.3

•  The following DTCs are not detected:

―  Boost air temperature sensor: P007B:00, P007C:00, P007D:00

―  IAT sensor No.2: P00E9:00, P00EA:00, P00EB:00

―  MAF sensor: P0101:00, P0102:00, P0103:00

―  MAP sensor No.2: P0106:00, P0107:00, P0108:00

―  ECT sensor: P0116:00, P0117:00, P0118:00, P011A:00

―  Intake shutter valve position sensor: P0122:00, P0123:00

―  A/F sensor: P0131:00, P0132:00

―  Exhaust gas pressure sensor No.1: P0471:00, P0472:00, P0473:00, P0545:00, P0546:00

―  NOx sensor No.1: P06EA:00, P2200:00, P220A:00, P220B:00, P220E:00, P229E:00, P22A0:00, P22A1:00

―  Exhaust gas temperature sensor: P161D:00, P161E:00, P166E:00

―  Exhaust gas temperature sensor No.2: P2031:00, 2032:00, P2033:00, P2080:00

―  BARO sensor: P2227:00, P2228:00, P2229:00

―  PM sensor: P2453:00, P2454:00, P2455:00

―  Exhaust gas temperature sensor No.5: P2481:00, P2482:00, P2483:00

―  CAN system communication error: U0100:00, U029D:00, U029E:00

Drive cycle

•  1

Self test type

•  CMDTC self test

Sensor used

•  NOx sensor No.1

•  Dosing control unit

FAIL-SAFE FUNCTION

•  Restricts the maximum remaining distance to empty.

•  Limits the upper limit of the engine speed.

VEHICLE STATUS WHEN DTCs ARE OUTPUT

•  Illuminates selective catalytic reduction (SCR) warning light.

•  P0615:00 may be stored if the remaining distance to empty is 0 km {0 mile} and the engine cannot be restarted.

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

POSSIBLE CAUSE

•  NOx sensor No.1 connector or terminals malfunction

•  Dosing control unit connector or terminals malfunction

•  Exhaust gas temperature sensoer No.5 malfunction

•  NOx sensor No.1 malfunction

―  NOx sensor No.1 internal heater malfunction

―  NOx sensor No.1 control unit malfunction

•  Dosing control unit malfunction

DESCRIPTION	Continuous monitoring of NOx sensor No.1 signal validity
DETECTION CONDITION	Determination conditions	• The dosing control unit detects two times that the speed of the signal received from NOx sensor No.1 is slower than the target vehicle speed.
Preconditions	• Target heat amount of NOx sensor: 44—1026 kJ • Battery voltage: 10.9—16.0 V • Exhaust gas temperature sensor No.5: 849.96 °C {1561.9 °F} or less • CAN communication is normal at engine start for a continuous 20 s or more • Fuel injection amount: -0.4—11.2 mg/stroke • Air/fuel ratio of NOx sensor No.1: 1.3 • The following DTCs are not detected: ― Boost air temperature sensor: P007B:00, P007C:00, P007D:00 ― IAT sensor No.2: P00E9:00, P00EA:00, P00EB:00 ― MAF sensor: P0101:00, P0102:00, P0103:00 ― MAP sensor No.2: P0106:00, P0107:00, P0108:00 ― ECT sensor: P0116:00, P0117:00, P0118:00, P011A:00 ― Intake shutter valve position sensor: P0122:00, P0123:00 ― A/F sensor: P0131:00, P0132:00 ― Exhaust gas pressure sensor No.1: P0471:00, P0472:00, P0473:00, P0545:00, P0546:00 ― NOx sensor No.1: P06EA:00, P2200:00, P220A:00, P220B:00, P220E:00, P229E:00, P22A0:00, P22A1:00 ― Exhaust gas temperature sensor: P161D:00, P161E:00, P166E:00 ― Exhaust gas temperature sensor No.2: P2031:00, 2032:00, P2033:00, P2080:00 ― BARO sensor: P2227:00, P2228:00, P2229:00 ― PM sensor: P2453:00, P2454:00, P2455:00 ― Exhaust gas temperature sensor No.5: P2481:00, P2482:00, P2483:00 ― CAN system communication error: U0100:00, U029D:00, U029E:00
Drive cycle	• 1
Self test type	• CMDTC self test
Sensor used	• NOx sensor No.1 • Dosing control unit
FAIL-SAFE FUNCTION	• Restricts the maximum remaining distance to empty. • Limits the upper limit of the engine speed.
VEHICLE STATUS WHEN DTCs ARE OUTPUT	• Illuminates selective catalytic reduction (SCR) warning light. • P0615:00 may be stored if the remaining distance to empty is 0 km {0 mile} and the engine cannot be restarted. • DTC P1640:00 is also stored in the PCM.
POSSIBLE CAUSE	• NOx sensor No.1 connector or terminals malfunction • Dosing control unit connector or terminals malfunction • Exhaust gas temperature sensoer No.5 malfunction • NOx sensor No.1 malfunction ― NOx sensor No.1 internal heater malfunction ― NOx sensor No.1 control unit malfunction • Dosing control unit malfunction

System Wiring Diagram

• Not applicable

Function Explanation (DTC Detection Outline)

• The dosing control unit detects the NOx concentration in the exhaust gas based on the NOx sensor No.1 signal.

• If the NOx value, which fluctuates according to the engine operation conditions, is way over the percentage indicating out of normal range, the dosing control unit stores a DTC.

Repeatability Verification Procedure

1. Start the engine and leave it idling for 1 min.

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

—: Not applicable

Item	Definition	Unit	Condition/Specification
NOX_C_B1S1	NOx sensor No.1	— (ppm)	• Displays the exhaust gas NOx concentration befor SCR converter

Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION

1

PURPOSE: 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.

No

Go to the next step.

2

PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

•  Recording can be facilitated using the screen capture function of the PC.

•  Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (NOx sensor No.1) on the repair order.

—

Go to the next step.

3

PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY OTHER RELATED DTCs OCCURRING

•  Switch the ignition off, then ON (engine off).

•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.

•  Is the PENDING CODE/DTC P2200:00 or U029D:00 also present?

Yes

Go to the applicable DTC inspection.

(See DTC P2200:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

(See DTC U029D:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

Repair or replace the applicable wiring harness or connector parts.

Go to the troubleshooting procedure to perform the procedure from Step 3.

No

Go to the next step.

4

PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM OR DOSING CONTROL UNIT

•  Access the following PIDs using the M-MDS:
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

―  NOX_C_B1S1

•  Is there any signal that is far out of specification?

Yes

Go to the next step.

No

Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

5

PURPOSE: VERIFY CONNECTOR CONNECTIONS

•  Access the following PIDs using the M-MDS:
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

―  NOX_C_B1S1

•  When the following parts are shaken, does the PID value include a PID item which has changed?

―  NOx sensor No.1

―  Dosing control unit

Yes

Inspect the related wiring harness and connector.

•  Repair or replace the malfunctioning part.

No

Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: 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.
No	Go to the next step.
2	PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (NOx sensor No.1) on the repair order.	—	Go to the next step.
3	PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY OTHER RELATED DTCs OCCURRING • Switch the ignition off, then ON (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. • Is the PENDING CODE/DTC P2200:00 or U029D:00 also present?	Yes	Go to the applicable DTC inspection. (See DTC P2200:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) (See DTC U029D:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) Repair or replace the applicable wiring harness or connector parts. Go to the troubleshooting procedure to perform the procedure from Step 3.
No	Go to the next step.
4	PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM OR DOSING CONTROL UNIT • Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) ― NOX_C_B1S1 • Is there any signal that is far out of specification?	Yes	Go to the next step.
No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.
5	PURPOSE: VERIFY CONNECTOR CONNECTIONS • Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) ― NOX_C_B1S1 • When the following parts are shaken, does the PID value include a PID item which has changed? ― NOx sensor No.1 ― Dosing control unit	Yes	Inspect the related wiring harness and connector. • Repair or replace the malfunctioning part.
No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

• Step 1

― Perform inspection of exhaust gas temperature sensor No.5.

• Step 2

― Perform inspection of NOx sensor No.1.

• Step 3

― Verify that the engine can be started.

• Step 4—6

― Verify that the primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

RESULTS

ACTION

1

PURPOSE: DETERMINE INTEGRITY OF EXHAUST GAS TEMPERATURE SENSOR No.5

•  Inspect the exhaust gas temperature sensor No.5 .
(See EXHAUST GAS TEMPERATURE SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is there any malfunction?

Yes

Replace the exhaust gas temperature sensor No.5, then go to Step 3.

(See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Go to the next step.

2

PURPOSE: DETERMINE INTEGRITY OF NOx SENSOR No.1

•  Inspect the NOx sensor No.1.
(See NOx SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is there any malfunction?

Yes

Replace the NOx sensor No.1, then go to the next step.

•  (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

Go to the next step.

No

Go to the next step.

3

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.

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.

4

IMPLEMENT THE REPEATABILITY VERIFICATION PROCEDURE

•  Always reconnect all disconnected connectors.

•  Implement the repeatability verification procedure.
(See Repeatability Verification Procedure.)

•  Has the restriction of the remaining distance to empty been canceled?

Yes

Go to the next step.

No

Repeat the inspection from Step 3.

5

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.

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.

6

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)].)

No

DTC troubleshooting completed.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: DETERMINE INTEGRITY OF EXHAUST GAS TEMPERATURE SENSOR No.5 • Inspect the exhaust gas temperature sensor No.5 . (See EXHAUST GAS TEMPERATURE SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the exhaust gas temperature sensor No.5, then go to Step 3. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
1		No	Go to the next step.
2	PURPOSE: DETERMINE INTEGRITY OF NOx SENSOR No.1 • Inspect the NOx sensor No.1. (See NOx SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the NOx sensor No.1, then go to the next step. • (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) Go to the next step.
2		No	Go to the next step.
3	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.
3		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.
4	IMPLEMENT THE REPEATABILITY VERIFICATION PROCEDURE • Always reconnect all disconnected connectors. • Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) • Has the restriction of the remaining distance to empty been canceled?	Yes	Go to the next step.
4		No	Repeat the inspection from Step 3.
5	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.
5		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.
6	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)].)
6		No	DTC troubleshooting completed.