DTC P0488:00 [PCM (SKYACTIV-D 2.2)]

id0102j5159900

Engine Type

Item

Reference

Fuel injector (2 pin type)

(See Fuel injector (2 pin type).)

Fuel injector (6 pin type)

(See Fuel injector (6 pin type).)

Item	Reference
Fuel injector (2 pin type)	(See Fuel injector (2 pin type).)
Fuel injector (6 pin type)	(See Fuel injector (6 pin type).)

Fuel injector (2 pin type)

DTC P0488:00

Duty signal error in EGR valve control system

DETECTION CONDITION

•  When the following conditions are met, the EGR valve control duty value is 90 % or more for a continuous 2 s:

MONITORING CONDITIONS

―  EGR valve is operating

―  When any of the following conditions is met:

•  Boost air temperature: 30 °C {86 °F} or more

•  Intake air temperature: 30 °C {86 °F} or more

•  Engine coolant temperature: 70 °C {158 °F} or more

Diagnostic support note

•  This is a continuous monitor (CCM).

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

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Inhibits the boost control.

•  Inhibits the EGR control.

•  PCM restricts engine-transaxle integration control. (ATX)

•  Inhibits engine-stop by operating the i-stop function.

POSSIBLE CAUSE

•  EGR valve connector or terminals malfunction

•  PCM connector or terminals malfunction

•  EGR valve malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC P0488:00	Duty signal error in EGR valve control system
DETECTION CONDITION	• When the following conditions are met, the EGR valve control duty value is 90 % or more for a continuous 2 s: MONITORING CONDITIONS ― EGR valve is operating ― When any of the following conditions is met: • Boost air temperature: 30 °C {86 °F} or more • Intake air temperature: 30 °C {86 °F} or more • Engine coolant temperature: 70 °C {158 °F} or more Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits the boost control. • Inhibits the EGR control. • PCM restricts engine-transaxle integration control. (ATX) • Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE	• EGR valve connector or terminals malfunction • PCM connector or terminals malfunction • EGR valve malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

STEP	INSPECTION		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 FREEZE FRAME DATA/snapshot data on the repair order.	—	Go to the next step.
2	VERIFY RELATED SERVICE 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 EGR VALVE CONNECTOR CONDITION • Switch the ignition off. • Disconnect the EGR valve 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 6.
3		No	Go to the next step.
4	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM 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 6.
4		No	Go to the next step.
5	INSPECT EGR VALVE • Inspect the EGR valve. (See EGR VALVE INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the EGR valve, then go to the next step. (See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5		No	Go to the next step.
6	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-D 2.2)].) • Start the engine and idle it. • Wait until the ECT PID value is above 80 °C {176 °F}. • Wait for 1 min (idle). • Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) Go to the next step.
6		No	Go to the next step.
7	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-D 2.2)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
7		No	DTC troubleshooting completed.

Fuel injector (6 pin type)

DTC P0488:00

Duty signal error in EGR valve control system

DETECTION CONDITION

•  With the following conditions met, the EGR valve control duty value is 90 % or more for a continuous 2 s.

―  EGR system: During control

―  Any one of the following conditions is met

•  Boost air temperature: 30 °C {86 °F} or more

•  Intake air temperature: 30 °C {86 °F} or more

•  Engine coolant temperature: 70 °C {158 °F} or more

―  The following DTCs are not detected

•  EGR valve position sensor: P0405:00, P0406:00

•  EGR valve DC motor control system: P0404:00

•  EGR valve control device in PCM: P16A1:00

•  ECT sensor: P0117:00, P0118:00

Diagnostic support note

•  This is a continuous monitor (CCM).

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

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Limits engine torque.

•  Inhibits the automatic diesel particulate filter regeneration control.

•  Inhibits the manual diesel particulate filter regeneration control.

•  Inhibits the EGR control.

•  Inhibits engine-stop by i-stop control.

POSSIBLE CAUSE

•  EGR valve connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Short circuit in each wiring harness of EGR valve

•  EGR valve malfunction

―  EGR valve sticking, operation malfunction

―  EGR valve freezing

―  EGR valve foreign matter penetration

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC P0488:00	Duty signal error in EGR valve control system
DETECTION CONDITION	• With the following conditions met, the EGR valve control duty value is 90 % or more for a continuous 2 s. ― EGR system: During control ― Any one of the following conditions is met • Boost air temperature: 30 °C {86 °F} or more • Intake air temperature: 30 °C {86 °F} or more • Engine coolant temperature: 70 °C {158 °F} or more ― The following DTCs are not detected • EGR valve position sensor: P0405:00, P0406:00 • EGR valve DC motor control system: P0404:00 • EGR valve control device in PCM: P16A1:00 • ECT sensor: P0117:00, P0118:00 Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Limits engine torque. • Inhibits the automatic diesel particulate filter regeneration control. • Inhibits the manual diesel particulate filter regeneration control. • Inhibits the EGR control. • Inhibits engine-stop by i-stop control.
POSSIBLE CAUSE	• EGR valve connector or terminal malfunction • PCM connector or terminal malfunction • Short circuit in each wiring harness of EGR valve • EGR valve malfunction ― EGR valve sticking, operation malfunction ― EGR valve freezing ― EGR valve foreign matter penetration • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the freeze frame data/snap shot data.	—	Go to the next step.
2	INSPECT EGR VALVE CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the EGR valve connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 7.
3	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
3		No	Repair or replace the connector, then go to Step 7.
4	INSPECT EACH WIRING HARNESS OF EGR VALVE/EGR VALVE POSITION SENSOR CIRCUIT FOR SHORT CIRCUIT • Verify that the EGR valve/EGR valve position sensor connector and the PCM connector are disconnected. • Switch the ignition OFF. • Inspect for continuity between EGR valve/EGR valve position sensor terminals A and E (vehicle wiring harness side). • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • EGR valve/EGR valve position sensor terminal A and PCM terminal 1BM If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the malfunctioning wiring harness. Go to Step 6.
4		No	Replace the EGR valve, then go to the next step. (See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5	INSPECT EGR VALVE • Inspect the EGR valve. (See EGR VALVE INSPECTION [SKYACTIV-D 2.2].) • Is the EGR valve normal?	Yes	Go to the next step.
5		No	Replace the EGR valve, then go to Step 7. (See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
6	INSPECT EGR VALVE FOR FOREIGN MATTER • Remove the EGR valve. (See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) • Inspect the EGR valve for foreign matter. • Is there foreign matter in the EGR valve?	Yes	Remove any foreign matter from the the EGR valve, then go to the next step.
6		No	Go to the next step.
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)].) • Drive the vehicle on flat roads under the following conditions 5 times repeatedly. 1. Start the engine and warm it up. 2. Idle the engine for 20 s. 3. Accelerate in 2nd gear to 35 km/h and drive the vehicle while maintaining the speed for 25 s. 4. Stop the vehicle and idle the engine for 20 s. 5. Accelerate in 3rd gear to 50 km/h and drive the vehicle while maintaining the speed for 50 s. 6. Stop the vehicle and idle the engine for 20 s. • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Has DTC P0488:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7		No	Go to the next step.
8	VERIFY OTHER DTCs • Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
8		No	DTC troubleshooting completed.