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DTC P050B:00 [PCM (SKYACTIV-G 2.0)]

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2016 – MX-5 – Engine

DTC P050B:00 [PCM (SKYACTIV-G 2.0)]

DTC P050B:00

Cold start ignition timing performance problem

DETECTION CONDITION

  • PCM internal RAM malfunction.

    Diagnostic support note

  • This is a continuous monitor (cold start emission reduction strategy monitoring).

  • The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.

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

  • FREEZE FRAME DATA/Snapshot data is available.

  • DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

  • PCM internal RAM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA

Yes

Go to the next step.

No

Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

2

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.

3

VERIFY RELATED REPAIR INFORMATION AVAILABILITY

  • Verify related Service Bulletins and/or on-line 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.

4

VERIFY DTC TROUBLESHOOTING COMPLETED

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

5

VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

DTC troubleshooting completed.

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