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DTC P2000:00 [PCM (SKYACTIV-D)]

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Note

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

Details On DTCs

Description

NOx absorber efficiency below threshold

Detection condition

Determination conditions

•  If the NOx purification rate detected by the NOx sensor is less than the NOx reduction rate of the threshold value calculated by the PCM from the engine operation conditions, the PCM determines that there is a malfunction in the NSC (NOx Storage Catalyst) efficiency.

Preconditions

•  All of the following conditions are met (basic condition)

―  Barometric pressure: 72.2 kPa {0.736 kgf/cm², 10.5 psi} or more

―  IAT (IAT sensor No.1): -10 °C {14 °F} or more

―  Open or short circuit not detected in NOx sensor heater circuit

―  Estimated SOx storage amount: Less than 4 g {0.1 oz}

―  Detected by NOx sensor, but lambda value is 1.05 or more for a continuous 15 s or more

•  After all of the basic conditions have been met, a cumulative 30 s or more have elapsed since all of the following conditions have been met.

―  The following conditions continue for 15 s or more

•  Auto diesel particulate filter regeneration control: not active

•  DENOx control: not active

•  DESOx control: not active

―  Estimated NOx concentration before NSC: 40 ppm or more

―  Estimated SOx storage amount: 0.1—0.8 g {0.01—0.02 oz}

―  Estimated NSC temperature: 200—300 °C {392—572 °F}

―  Diesel particulate filter regeneration control is not operating

―  PCM does not detect an open or short circuit in NOx sensor heater circuit

―  Compulsory diesel particulate filter regeneration is completed

•  The following DTCs are not detected.

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

―  Exhaust gas temperature sensor No.1: P0545:00, P0546:00, P2080:00

―  Exhaust gas temperature sensor No.2: P2031:00, P2032:00, P2033:00

―  Exhaust gas temperature sensor No.3: P242B:00, P242C:00, P242D:00

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

―  Fuel injection timing: P10CB:00, P10CC:00, P10CD:00, P10D1:00

―  IAT sensor No.1: P0111:00, P0112:00, P0113:00

―  IAT sensor No.3: P1118:00, P1119:00, P1147:00

―  MAP sensor: P0106:00, P0107:00, P0108:00

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

―  A/F sensor heater: P0031:00, P0032:00

―  A/F sensor: P0130:00, P0133:00, P0134:00

―  Exhaust gas pressure sensor No.2: P2454:00, P2455:00

―  NOx sensor: U029D:00, P220A:00, P220E:00, P2204:00, P2205:00, P2203:00, P2202:00, P2200:00, P0138:00, P0137:00, P239E:00

―  NOx sensor: P2201:00

Drive cycle

•  2

Self test type

•  CMDTC self test

Sensor used

•  NOx sensor

•  MAF sensor

•  Exhaust pressure sensor No.1

•  Exhaust temperature sensor No.1

•  Exhaust temperature sensor No.2

•  Exhaust temperature sensor No.3

•  IAT sensor No.3

•  MAP sensor

•  PCM

Fail-safe

•  Not applicable

Vehicle status when dtcs are output

•  Illuminates check engine light.

Possible cause

•  Fuel injection system malfunction

•  NSC (NOx Storage Catalyst) malfunction

―  Damage

―  Deformation

•  PCM malfunction

Description	NOx absorber efficiency below threshold
Detection condition	Determination conditions	• If the NOx purification rate detected by the NOx sensor is less than the NOx reduction rate of the threshold value calculated by the PCM from the engine operation conditions, the PCM determines that there is a malfunction in the NSC (NOx Storage Catalyst) efficiency.
Preconditions	• All of the following conditions are met (basic condition) ― Barometric pressure: 72.2 kPa {0.736 kgf/cm², 10.5 psi} or more ― IAT (IAT sensor No.1): -10 °C {14 °F} or more ― Open or short circuit not detected in NOx sensor heater circuit ― Estimated SOx storage amount: Less than 4 g {0.1 oz} ― Detected by NOx sensor, but lambda value is 1.05 or more for a continuous 15 s or more • After all of the basic conditions have been met, a cumulative 30 s or more have elapsed since all of the following conditions have been met. ― The following conditions continue for 15 s or more • Auto diesel particulate filter regeneration control: not active • DENOx control: not active • DESOx control: not active ― Estimated NOx concentration before NSC: 40 ppm or more ― Estimated SOx storage amount: 0.1—0.8 g {0.01—0.02 oz} ― Estimated NSC temperature: 200—300 °C {392—572 °F} ― Diesel particulate filter regeneration control is not operating ― PCM does not detect an open or short circuit in NOx sensor heater circuit ― Compulsory diesel particulate filter regeneration is completed • The following DTCs are not detected. ― BARO sensor: P2227:00, P2228:00, P2229:00 ― Exhaust gas temperature sensor No.1: P0545:00, P0546:00, P2080:00 ― Exhaust gas temperature sensor No.2: P2031:00, P2032:00, P2033:00 ― Exhaust gas temperature sensor No.3: P242B:00, P242C:00, P242D:00 ― Exhaust gas pressure sensor No.1: P0471:00, P0472:00, P0473:00 ― Fuel injection timing: P10CB:00, P10CC:00, P10CD:00, P10D1:00 ― IAT sensor No.1: P0111:00, P0112:00, P0113:00 ― IAT sensor No.3: P1118:00, P1119:00, P1147:00 ― MAP sensor: P0106:00, P0107:00, P0108:00 ― MAF sensor: P0101:00, P0102:00, P0103:00 ― A/F sensor heater: P0031:00, P0032:00 ― A/F sensor: P0130:00, P0133:00, P0134:00 ― Exhaust gas pressure sensor No.2: P2454:00, P2455:00 ― NOx sensor: U029D:00, P220A:00, P220E:00, P2204:00, P2205:00, P2203:00, P2202:00, P2200:00, P0138:00, P0137:00, P239E:00 ― NOx sensor: P2201:00
Drive cycle	• 2
Self test type	• CMDTC self test
Sensor used	• NOx sensor • MAF sensor • Exhaust pressure sensor No.1 • Exhaust temperature sensor No.1 • Exhaust temperature sensor No.2 • Exhaust temperature sensor No.3 • IAT sensor No.3 • MAP sensor • PCM
Fail-safe	• Not applicable
Vehicle status when dtcs are output	• Illuminates check engine light.
Possible cause	• Fuel injection system malfunction • NSC (NOx Storage Catalyst) malfunction ― Damage ― Deformation • PCM malfunction

System Wiring Diagram

• Not applicable

Function Explanation (DTC Detection Outline)

• The PCM performs diagnosis of the NSC based on the purification rate calculated by comparing the NSC before and after NOx concentration.

• The PCM detects the NSC before NOx concentration according to the engine operation conditions, and the NSC after NOx concentration by NOx sensor. The PCM calculates the NSC purification rate based on this by comparing the NSC before and after NOx concentration.

• When the specified time has elapsed with the troubleshooting conditions met, the PCM determines that the NSC performance has lowered due to deterioration or damage if the NOx purification rate is less than the threshold value.

• If the PCM determines a malfunction, it stores a pending code.

• If the PCM determines that the malfunction recurs from the next drive cycle and thereafter, it stores a DTC and turns on the check engine light.

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Repeatability Verification Procedure

Warning

• When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.

• While performing this step, always operate the vehicle in a safe and lawful manner.

1. Start the engine.

Note

• Match the engine coolant temperature in the recorded FREEZE FRAME DATA/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.

2. Drive the vehicle for 10 min under the driving conditions stored in the FREEZE FRAME DATA/snapshot data.

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item	Reference
MAF	(See PID/DATA MONITOR TABLE [PCM (SKYACTIV-D)].)
EX_PRES
EX_GAS_TEMP_1
EX_GAS_TEMP_2
EX_GAS_TEMP_3
IAT13
MAP

Function Inspection Using M-MDS

Step

Inspection

Results

Action

1

PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY

•  Verify related Service Bulletins, on-line repair information, or Service Information availability.

•  Is any related Information available?

Yes

Perform repair or diagnosis according to the available information.

•  If the vehicle is not repaired, go to the next step.

No

Go to the next step.

2

PURPOSE: VERIFY DTC CAUSING FREEZE FRAME DATA

•  Is DTC P2000:00 causing the freeze frame data?

Yes

Go to the next step.

No

Inspect the DTC causing the freeze frame data.

(See DTC TABLE [PCM (SKYACTIV-D)].)

3

PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

•  Record the freeze frame data/snapshot data.

Note

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

—

Go to the next step.

4

PURPOSE: VERIFY OTHER RELATED DTCs

•  Perform the DTC inspection for the PCM.
(See DTC INSPECTION)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D)].)

No

Go to the next step.

5

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

•  Access the following PIDs using the M-MDS:
(See PID/DATA MONITOR INSPECTION.)

―  MAF

―  EX_PRES

―  EX_GAS_TEMP_2

―  EX_GAS_TEMP_3

―  EX_GAS_TEMP_3

―  IAT13

―  MAP

•  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.

6

PURPOSE: VERIFY CONNECTOR CONNECTIONS

•  Access the following PIDs using the M-MDS:
(See PID/DATA MONITOR INSPECTION.)

―  MAF

―  EX_PRES

―  EX_GAS_TEMP_2

―  EX_GAS_TEMP_3

―  EX_GAS_TEMP_3

―  IAT13

―  MAP

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

―  MAF sensor

―  Exhaust gas pressure sensor No.1

―  Exhaust gas temperature sensor No.1

―  Exhaust gas temperature sensor No.2

―  Exhaust gas temperature sensor No.3

―  IAT sensor No.3

―  MAP sensor

―  PCM

Yes

Inspect the related wiring harness and connector.

•  Repair or replace the malfunctioning part.

Go to the troubleshooting procedure to perform the procedure from repair completion verification.

No

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

Step	Inspection	Results	Action
1	PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY • Verify related Service Bulletins, on-line repair information, or Service Information availability. • Is any related Information available?	Yes	Perform repair or diagnosis according to the available information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
2	PURPOSE: VERIFY DTC CAUSING FREEZE FRAME DATA • Is DTC P2000:00 causing the freeze frame data?	Yes	Go to the next step.
No	Inspect the DTC causing the freeze frame data. (See DTC TABLE [PCM (SKYACTIV-D)].)
3	PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION • Record the freeze frame data/snapshot data. Note • Recording can be facilitated using the screen capture function of the PC.	—	Go to the next step.
4	PURPOSE: VERIFY OTHER RELATED DTCs • Perform the DTC inspection for the PCM. (See DTC INSPECTION) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D)].)
No	Go to the next step.
5	PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM OR PCM • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION.) ― MAF ― EX_PRES ― EX_GAS_TEMP_2 ― EX_GAS_TEMP_3 ― EX_GAS_TEMP_3 ― IAT13 ― MAP • 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.
6	PURPOSE: VERIFY CONNECTOR CONNECTIONS • Access the following PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION.) ― MAF ― EX_PRES ― EX_GAS_TEMP_2 ― EX_GAS_TEMP_3 ― EX_GAS_TEMP_3 ― IAT13 ― MAP • When the following parts are shaken, does the PID value include a PID item which has changed? ― MAF sensor ― Exhaust gas pressure sensor No.1 ― Exhaust gas temperature sensor No.1 ― Exhaust gas temperature sensor No.2 ― Exhaust gas temperature sensor No.3 ― IAT sensor No.3 ― MAP sensor ― PCM	Yes	Inspect the related wiring harness and connector. • Repair or replace the malfunctioning part. Go to the troubleshooting procedure to perform the procedure from repair completion verification.
No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

• Step 1

― Perform a unit inspection of the NOx sensor.

• Step 2

― Perform inspection of each separate part.

• Repair completion verification

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

Step

Inspection

Results

Action

1

PURPOSE: INSPECT NOx SENSOR FOR MALFUNCTION

•  Inspect the applicable part.
(See NOx SENSOR INSPECTION [SKYACTIV-D 1.8].)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

2

PURPOSE: DETERMINE IF MALFUNCTION CAUSE IS FUEL INJECTION SYSTEM OR DETERIORATION OF CATALYTIC CONVERTER (OXIDATION CATALYST/NOX STRAGE CATALYST)

•  Perform the fuel injector operation Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-D].)

•  Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results.

Then go to the next step.

No

Replace the catalytic converter (oxidation catalyst/NOx strage catalyst), then go to the next step.

(See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Repair completion verification 1

PURPOSE: VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Replicate the vehicle conditions at the time the DTC was detected using the following procedure.

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

•  Perform the DTC inspection for the PCM.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

No

Go to the next step.

Repair completion verification 2

PURPOSE: VERIFY IF OTHER DTCs DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	PURPOSE: INSPECT NOx SENSOR FOR MALFUNCTION • Inspect the applicable part. (See NOx SENSOR INSPECTION [SKYACTIV-D 1.8].) • Is the part normal?	Yes	Go to the next step.
1		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
2	PURPOSE: DETERMINE IF MALFUNCTION CAUSE IS FUEL INJECTION SYSTEM OR DETERIORATION OF CATALYTIC CONVERTER (OXIDATION CATALYST/NOX STRAGE CATALYST) • Perform the fuel injector operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-D].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results. Then go to the next step.
2		No	Replace the catalytic converter (oxidation catalyst/NOx strage catalyst), then go to the next step. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 1	PURPOSE: VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Replicate the vehicle conditions at the time the DTC was detected using the following procedure. ― Implement the repeatability verification procedure. (See Repeatability Verification Procedure) • Perform the DTC inspection for the PCM. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	PURPOSE: VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.