DTC P0134:00 [PCM (SKYACTIV-D 2.2)]

id0102j5702500

DTC P0134:00

A/F sensor circuit no activity detected

DETECTION CONDITION

•  With the following conditions met, the A/F sensor element impedance is 75 ohms or more for a continuous 5 s.

―  Battery positive voltage: 11—16 V

―  Ignition is switched ON (engine on)

―  A/F sensor feedback correction is actuated

Diagnostic support note

•  This is an intermittent monitor (A/F sensor).

•  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.

POSSIBLE CAUSE

•  A/F sensor heater malfunction

•  A/F sensor malfunction

―  A/F sensor connector or terminal malfunction

―  A/F sensor deterioration

―  Poor installation of A/F sensor

•  PCM input signal error

―  A/F sensor signal

•  Open circuit in wiring harness between the following terminals:

―  A/F sensor terminal B and PCM terminal 1H

―  A/F sensor terminal D and PCM terminal 1I

•  PCM malfunction

DTC P0134:00	A/F sensor circuit no activity detected
DETECTION CONDITION	• With the following conditions met, the A/F sensor element impedance is 75 ohms or more for a continuous 5 s. ― Battery positive voltage: 11—16 V ― Ignition is switched ON (engine on) ― A/F sensor feedback correction is actuated Diagnostic support note • This is an intermittent monitor (A/F sensor). • 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.
POSSIBLE CAUSE	• A/F sensor heater malfunction • A/F sensor malfunction ― A/F sensor connector or terminal malfunction ― A/F sensor deterioration ― Poor installation of A/F sensor • PCM input signal error ― A/F sensor signal • Open circuit in wiring harness between the following terminals: ― A/F sensor terminal B and PCM terminal 1H ― A/F sensor terminal D and PCM terminal 1I • PCM malfunction

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

VERIFY OTHER RELATED DTCs

•  Switch the ignition OFF, and then switch it ON (engine off).

•  Display the DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)])

•  Has any DTC other than P0134:00 been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)])

No

Go to the next step.

3

INSPECT A/F SENSOR HEATER

•  Inspect the A/F sensor heater.
(See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-D 2.2])

•  Is the A/F sensor heater normal?

Yes

Go to the next step.

No

Replace the A/F sensor, then go to Step 8.

(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

4

INSPECT A/F SENSOR CONNECTOR CONNECTION

•  Switch the ignition OFF.

•  Disconnect the A/F sensor 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.

No

Repair or replace the connector, then go to Step 8.

5

VERIFY A/F SENSOR INSTALLATION CONDITION

•  Verify that there is no looseness in the A/F sensor installation.

•  Is the A/F sensor installation normal.

Yes

Go to the next step.

No

Install the A/F sensor correctly, then goto Step 8.

(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

6

INSPECT A/F SENSOR

•  Reconnect all disconnected connectors and hoses.

•  Inspect the A/F sensor.
(See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-D 2.2])

•  Is the A/F sensor normal?

Yes

Go to the next step.

No

Inspect the A/F sensor wiring harness for open or short circuit.

•  Malfunction in the wiring harness

―  Repair or replace the malfunctioning location, then go to the next step.

•  No malfunction in the wiring harness

―  Replace the A/F sensor, then go to the next step.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

7

INSPECT A/F SENSOR CONTROL CIRCUIT FOR OPEN CIRCUIT

•  Verify that the A/F sensor connector and the PCM connector are disconnected.

•  Switch the ignition OFF.

•  Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side).

―  A/F sensor terminal B and PCM terminal 1H

―  A/F sensor terminal D and PCM terminal 1I

•  Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  A/F sensor terminal B and PCM terminal 1H

•  A/F sensor terminal D and PCM terminal 1I

If there is a common connector:

―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.

―  Repair or replace the malfunctioning location.

If there is no common connector:

―  Repair or replace the wiring harness which has an open circuit.

Go to the next step.

8

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Reconnect all disconnected connectors and hoses.

•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
(See CLEARING DTC [PCM (SKYACTIV-D 2.2)])

•  Start the engine and warm it up.

•  Stop all electrical loads. (Such as A/C, headlights, blower fan, rear window defroster)

•  Idle the engine for 15 min.

•  Stop the engine.

•  Display the DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)])

•  Has DTC P0134:00 been recorded?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the PCM, then go to the next step.
(See FOREWORD [PCM (SKYACTIV-D 2.2)])

No

Go to the next step.

9

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)])

No

DTC troubleshooting completed.

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	VERIFY OTHER RELATED DTCs • Switch the ignition OFF, and then switch it ON (engine off). • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)]) • Has any DTC other than P0134:00 been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)])
2		No	Go to the next step.
3	INSPECT A/F SENSOR HEATER • Inspect the A/F sensor heater. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-D 2.2]) • Is the A/F sensor heater normal?	Yes	Go to the next step.
3		No	Replace the A/F sensor, then go to Step 8. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
4	INSPECT A/F SENSOR CONNECTOR CONNECTION • Switch the ignition OFF. • Disconnect the A/F sensor 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.
4		No	Repair or replace the connector, then go to Step 8.
5	VERIFY A/F SENSOR INSTALLATION CONDITION • Verify that there is no looseness in the A/F sensor installation. • Is the A/F sensor installation normal.	Yes	Go to the next step.
5		No	Install the A/F sensor correctly, then goto Step 8. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
6	INSPECT A/F SENSOR • Reconnect all disconnected connectors and hoses. • Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-D 2.2]) • Is the A/F sensor normal?	Yes	Go to the next step.
6		No	Inspect the A/F sensor wiring harness for open or short circuit. • Malfunction in the wiring harness ― Repair or replace the malfunctioning location, then go to the next step. • No malfunction in the wiring harness ― Replace the A/F sensor, then go to the next step. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
7	INSPECT A/F SENSOR CONTROL CIRCUIT FOR OPEN CIRCUIT • Verify that the A/F sensor connector and the PCM connector are disconnected. • Switch the ignition OFF. • Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side). ― A/F sensor terminal B and PCM terminal 1H ― A/F sensor terminal D and PCM terminal 1I • Is there continuity?	Yes	Go to the next step.
7		No	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • A/F sensor terminal B and PCM terminal 1H • A/F sensor terminal D and PCM terminal 1I If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the wiring harness which has an open circuit. Go to the next step.
8	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all disconnected connectors and hoses. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)]) • Start the engine and warm it up. • Stop all electrical loads. (Such as A/C, headlights, blower fan, rear window defroster) • Idle the engine for 15 min. • Stop the engine. • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)]) • Has DTC P0134:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See FOREWORD [PCM (SKYACTIV-D 2.2)])
8		No	Go to the next step.
9	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)])
9		No	DTC troubleshooting completed.