DTC P2BAE:00 [MZR-CD 2.2]

DTC P2BAE:00	NOx exceedance-NOx control monitoring system
DETECTION CONDITION	• The SCR control module monitors the NOx concentration in the exhaust gas detected by the NOx sensor. If the difference in NOx concentration is less than 20 ppm depending on whether AdBlue® is injected or not, the SCR control module detects that there is a malfunction in the SCR system. Monitoring condition • Urea pump control: AdBlue® pressure stability control • Ambient temperature: above -7 °C {19 °F} • Barometric pressure: above 75 kPa {0.76 kgf/cm², 11 psi} Diagnostic support note • The MIL illuminates if the SCR control unit detects the above malfunction condition in first drive cycle. • The SCR warning light flashes if the SCR control unit detects the above malfunction condition in first drive cycle. • PENDING CODE is available if the SCR control unit detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (mode2) and snapshot data are available. • The DTC is stored in the SCR control unit memory.
POSSIBLE CAUSE	• Urea injector malfunction • Foreign matter in or clogging of injection nozzle of urea injector • AdBlue® deterioration • Urea mixer malfunction • SCR converter clacked or damaged • NOx sensor malfunction • SCR control module malfunction

DTC P2BAE:00

NOx exceedance-NOx control monitoring system

DETECTION CONDITION

• The SCR control module monitors the NOx concentration in the exhaust gas detected by the NOx sensor. If the difference in NOx concentration is less than 20 ppm depending on whether AdBlue® is injected or not, the SCR control module detects that there is a malfunction in the SCR system.

Monitoring condition

• Urea pump control: AdBlue® pressure stability control

• Ambient temperature: above -7 °C {19 °F}

• Barometric pressure: above 75 kPa {0.76 kgf/cm², 11 psi}

Diagnostic support note

• The MIL illuminates if the SCR control unit detects the above malfunction condition in first drive cycle.

• The SCR warning light flashes if the SCR control unit detects the above malfunction condition in first drive cycle.

• PENDING CODE is available if the SCR control unit detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA (mode2) and snapshot data are available.

• The DTC is stored in the SCR control unit memory.

POSSIBLE CAUSE

• Urea injector malfunction

• Foreign matter in or clogging of injection nozzle of urea injector

• AdBlue® deterioration

• Urea mixer malfunction

• SCR converter clacked or damaged

• NOx sensor malfunction

• SCR control module malfunction

STEP	INSPECTION	ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED • Have FREEZE FRAME DATA (mode2) or snapshot data been recorded?	Yes	Go to the next step.
No	Record the FREEZE FRAME DATA (mode2) and snapshot data on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform the 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.
3	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE2) • Is DTC P2BAE:00: on FREEZE FRAME DATA (mode2)?	Yes	Go to the next step.
No	Go to troubleshooting for DTC on FREEZE FRAME DATA (mode2). (See DTC TABLE [MZR-CD 2.2].)
4	VERIFY NOX SENSOR SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? • Inspect the NOx sensor. (See NOX SENSOR INSPECTION [MZR-CD 2.2].) • Is the NOx sensor signal normal?	Yes	Go to Step 7.
No	Go to the next step.
5	INSPECT WHETHER MALFUNCTION IS IN UREA INJECTOR OR ELSEWHERE • Perform AdBlue® Injection Amount Inspection using the M-MDS. (See SCR SYSTEM INSPECTION [MZR-CD 2.2].) • Is the AdBlue® injection amount within the specified?	Yes	Go to the next step.
No	Repair or replace malfunctioning part according inspection result, then go to Step 7.
6	INSPECT UREA INJECTOR FOR RESTRICT • Visually inspect the injection nozzle of the urea injector for foreign matter or clogging. • Is there foreign matter or clogging?	Yes	After cleaning the injector nozzle of the urea injector with water, go to the next step.
No	Replace the AdBlue® to SCR tank till filled up, then go to the next step. (See AdBlue® BLEEDING/CHARGING [MZR-CD 2.2].)
7	DETERMINE IF THE MALFUNCTION IS CAUSED BY THE AdBlue® INJECTION SYSTEM OR CONVERTER SYSTEM • Make sure to reconnect all disconnected connectors. • Clear the DTC from the SCR control unit memory using the M-MDS. • Perform the OBD DRIVE MODE for SCR system. (See OBD DRIVE MODE [MZR-CD 2.2].) • Retrieve the DTC using the M-MDS. • Is the PENDING CODE for this DTC present?	Yes	Perform all the steps which have not been performed to Step 7. If DTC P2BAE:00 is detected even though all steps have been performed, go to the next step.
No	Go to Step 11. (AdBlue® injection system malfunction)
8	INSPECT UREA MIXER • Remove the urea mixer. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].) • Visually inspect the urea mixer for bent or cracked. • Is there any malfunction?	Yes	Replace the urea mixer, then go to Step 10. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
9	INSPECT SCR CONVERTER • Remove the SCR converter. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].) • Visually inspect the SCR converter for cracked or damaged. • Is there any malfunction?	Yes	Replace the SCR converter, then go to the next step. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Replace the NOx sensor, then go to the next step. (NOx sensor signal malfunction) (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
10	VERIFY TROUBLESHOOTING OF DTC P2BAE:00 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the SCR control unit memory using the M-MDS. • Perform the OBD DRIVE MODE for SCR system. (See OBD DRIVE MODE [MZR-CD 2.2].) • Retrieve the DTC using the M-MDS. • Is the PENDING CODE for this DTC present?	Yes	Replace the SCR control unit, then go to the next step. (See SCR CONTROL UNIT REMOVAL/INSTALLATION [MZR-CD 2.2].)
No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR-CD 2.2].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD 2.2].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED

• Have FREEZE FRAME DATA (mode2) or snapshot data been recorded?

Yes

Go to the next step.

Record the FREEZE FRAME DATA (mode2) and snapshot data on the repair order, then go to the next step.

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Information availability.

• Is any related Service Information available?

Yes

Perform the repair or diagnosis according to the available Service Information.

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

Go to the next step.

IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE2)

• Is DTC P2BAE:00: on FREEZE FRAME DATA (mode2)?

Yes

Go to the next step.

Go to troubleshooting for DTC on FREEZE FRAME DATA (mode2).

(See DTC TABLE [MZR-CD 2.2].)

VERIFY NOX SENSOR SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?

• Inspect the NOx sensor. (See NOX SENSOR INSPECTION [MZR-CD 2.2].)

• Is the NOx sensor signal normal?

Yes

Go to Step 7.

Go to the next step.

INSPECT WHETHER MALFUNCTION IS IN UREA INJECTOR OR ELSEWHERE

• Perform AdBlue® Injection Amount Inspection using the M-MDS. (See SCR SYSTEM INSPECTION [MZR-CD 2.2].)

• Is the AdBlue® injection amount within the specified?

Yes

Go to the next step.

Repair or replace malfunctioning part according inspection result, then go to Step 7.

INSPECT UREA INJECTOR FOR RESTRICT

• Visually inspect the injection nozzle of the urea injector for foreign matter or clogging.

• Is there foreign matter or clogging?

Yes

After cleaning the injector nozzle of the urea injector with water, go to the next step.

Replace the AdBlue® to SCR tank till filled up, then go to the next step.

(See AdBlue® BLEEDING/CHARGING [MZR-CD 2.2].)

DETERMINE IF THE MALFUNCTION IS CAUSED BY THE AdBlue® INJECTION SYSTEM OR CONVERTER SYSTEM

• Make sure to reconnect all disconnected connectors.

• Clear the DTC from the SCR control unit memory using the M-MDS.

• Perform the OBD DRIVE MODE for SCR system. (See OBD DRIVE MODE [MZR-CD 2.2].)

• Retrieve the DTC using the M-MDS.

• Is the PENDING CODE for this DTC present?

Yes

Perform all the steps which have not been performed to Step 7.

If DTC P2BAE:00 is detected even though all steps have been performed, go to the next step.

Go to Step 11.

(AdBlue® injection system malfunction)

INSPECT UREA MIXER

• Remove the urea mixer. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

• Visually inspect the urea mixer for bent or cracked.

• Is there any malfunction?

Yes

Replace the urea mixer, then go to Step 10.

(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

INSPECT SCR CONVERTER

• Remove the SCR converter. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

• Visually inspect the SCR converter for cracked or damaged.

• Is there any malfunction?

Yes

Replace the SCR converter, then go to the next step.

(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

Replace the NOx sensor, then go to the next step.

(NOx sensor signal malfunction)

(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

VERIFY TROUBLESHOOTING OF DTC P2BAE:00 COMPLETED

• Make sure to reconnect all disconnected connectors.

• Clear the DTC from the SCR control unit memory using the M-MDS.

• Perform the OBD DRIVE MODE for SCR system. (See OBD DRIVE MODE [MZR-CD 2.2].)

• Retrieve the DTC using the M-MDS.

• Is the PENDING CODE for this DTC present?

Yes

Replace the SCR control unit, then go to the next step.

(See SCR CONTROL UNIT REMOVAL/INSTALLATION [MZR-CD 2.2].)

Go to the next step.

VERIFY AFTER REPAIR PROCEDURE

• Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR-CD 2.2].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [MZR-CD 2.2].)

DTC troubleshooting completed.