DTC P20EB:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)]

id0102k1724000

DTC P20EB:00

SCR relay No.1 malfunction (stuck closed)

DETECTION CONDITION

•  With the following conditions met, the dosing control unit detects that SCR relay No.1 is stuck.

MONITORING CONDITIONS

•  Ignition switched ON (engine off or on)

•  Battery voltage: 10.9—16 V

Note

•  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

•   Not applicable

POSSIBLE CAUSE

•  SCR relay No.1 stuck closed

•  Dosing control unit malfunction

SYSTEM WIRING DIAGRAM

•  Not applicable

DTC P20EB:00	SCR relay No.1 malfunction (stuck closed)
DETECTION CONDITION	• With the following conditions met, the dosing control unit detects that SCR relay No.1 is stuck. MONITORING CONDITIONS • Ignition switched ON (engine off or on) • Battery voltage: 10.9—16 V Note • 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	• Not applicable
POSSIBLE CAUSE	• SCR relay No.1 stuck closed • Dosing control unit malfunction
SYSTEM WIRING DIAGRAM	• Not applicable

Diagnostic Procedure

STEP	INSPECTION	RESULTS	ACTION
1	VERIFY FREEZE FRAME DATA/SNAPSHOT DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA/snapshot data been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA/snapshot data on the repair order, then 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	VERIFY RELATED PENDING CODE AND/OR DTC • Switch the ignition off, then ON (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Is the PENDING CODE/ DTC present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) Perform applicable DTC troubleshooting, and then perform compulsory diesel particulate filter regeneration.
3		No	Go to the next step.
4	INSPECT SCR RELAY NO.1 • Switch the ignition off. • Remove the SCR relay No.1. • Inspect the SCR relay No.1. (See RELAY INSPECTION.) • Is there any malfunction?	Yes	Replace the SCR relay No.1, then go to Step 5.
4		No	Go to the next step.
5	VERIFY DTC TROUBLESHOOTING COMPLETED • 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)].) • Leave for 1 min while idling. • Display the DTCs using the M-MDS. (See CLEARING DTC [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • 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	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.
5		No	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.