DTC P115D [MZ-CD 1.6 (Y6) (EURO4 emission level)]

id0102g6835100

DTC P115D

Mass air flow (MAF) sensor signal offset
DETECTION CONDITION
•  The PCM monitors the MAF signal using the PWM (Pulse Width Modulation) signal from MAF sensor. If the PWM signal cycle length from MAF sensor is following conditions for 655 s, the PCM determines that the MAF sensor signal offset error.
―  If the PWM signal cycle length from MAF sensor is more than 1,100 µs
―  If the PWM signal cycle length from MAF sensor is less than 50 µs
POSSIBLE CAUSE
•  Loose or poor installation intake-air system (hose band, pipe, hose)
•  Damage and cracking in intake-air system hose and/or pipe
•  Contaminants on MAF sensor
•  MAF sensor characteristic malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to off, then to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the following PENDING CODE/DTC also present?
―  P0100, P0101, P0102, P0103, P1101, P1102, P1103
Yes
Go to the applicable DTC inspection.
(See DTC P0100 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P0101 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P0102 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P0103 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P1101, P2279 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P1102 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P1103 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
No
Go to the next step.
4
INSPECT INTAKE-AIR SYSTEM FOR INSTALLATION
•  Inspect the intake-air system parts (hose, pipe, hose band) for installation.
•  Are there installed properly?
Yes
Go to the next step.
No
Reinstall the suspect part properly, then go to Step 7.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)
5
INSPECT THE INTAKE-AIR SYSTEM FOR DAMAGE AND CRACKING
•  Inspect the intake-air system parts (hose, pipe) for damage and cracking.
•  Is there any malfunction?
Yes
Replace the suspect part, then go to Step 7.
No
Go to the next step.
6
INSPECT MAF SENSOR CONDITION
•  Switch the ignition to OFF.
•  Remove the MAF sensor.
•  Inspect MAF sensor condition.
•  Are there any contaminations (oil, water, dust, etc.) on MAF sensor?
Yes
Remove contaminates from MAF sensor, then go to the next step.
No
Replace the MAF sensor, then go to the next step.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)
7
VERIFY THAT DTC P115D TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
No
DTC troubleshooting completed.