DTC P0A8F:00 [SKYACTIV-G 2.5]

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2014 - Mazda6 - Engine

DTC P0A8F:00 [SKYACTIV-G 2.5]

NOTE:

To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.

Details On DTCs


DESCRIPTION	Power system: Low input
DETECTION CONDITION	Determination conditions	Any one of the following conditions is met: Battery voltage is 11 V or less when ignition is switched off after leaving vehicle for 30 days or more. Battery voltage is 11 V or less for a continuous 5 days when ignition is switched off.
	Preconditions	Difference in battery voltage for 30 min since ignition was switched off is specified value or less Electrical current from battery for 30 min since ignition was switched off is within specified value
	Drive cycle	2
	Self test type	CMDTC self test
	Sensor used	Current sensor
FAIL-SAFE FUNCTION	Inhibits the i-ELOOP control.
VEHICLE STATUS WHEN DTCs ARE OUTPUT	Illuminates the master warning light. The engine cannot be started or the engine may stall due to battery voltage decrease.
POSSIBLE CAUSE	Battery malfunction Current sensor malfunction Front body control module (FBCM) malfunction PCM malfunction

System Wiring Diagram

Not applicable.

Function Explanation (DTC Detection Outline)

The battery assures voltage for engine starting and while the vehicle is being driven. (Addition necessary for both domestic and overseas)

The PCM determines a dendrite malfunction by the condition in which the battery voltage value continues to be low for the specified time. In this case, the PCM determines a malfunction in a battery-related part and stores a DTC.

Repeatability Verification Procedure

Start the engine

PID Item/Simulation Item Used In Diagnosis

Not applicable.

Function Inspection Using M-MDS


STEP	INSPECTION	RESULTS	ACTION
1	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.
1		No	Go to the next step.
2	PURPOSE: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED BY DTC RELATED CURRENT SENSOR Switch the ignition off, then ON (engine off). Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].) Is the PENDING CODE/DTC P058A:00 also present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC P058A:00 [SKYACTIV-G 2.5].) Go to the next step.
2		No	Go to the next step.
3	PURPOSE: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED BY DTC RELATED CAN OR LIN COMMUNICATION Perform the PCM and front body control module (FBCM) DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].) (See DTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].) Are DTCs related CAN or LIN communication recorded?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [SKYACTIV-G 2.5].) (See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].) Go to the next step.
3		No	Go to the next step.
4	PURPOSE: VERIFY DTC P0A8F:00 TO DETERMINE IF MALFUNCTION CAUSED BY BATTERY Is P0A8F:00 stored as a DTC not as a pending code?	Yes	Replace the battery. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5].) Go to the troubleshooting procedure to perform the procedure from Step 2.
4		No	Go to the troubleshooting procedure to perform the procedure from Step 1.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

Step 1

Perform a unit inspection of the battery.

Step 2—3

Verify that primary malfunction is resolved and there are no other malfunctions.


STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: DETERMINE INTEGRITY OF BATTERY Inspect the battery. (See BATTERY INSPECTION [SKYACTIV-G 2.5].) Is there any malfunction?	Yes	Replace the battery, then go to the next step. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)
1		No	Go to the next step.
2	PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION Always reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [SKYACTIV-G 2.5].) Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].) Is the PENDING CODE for this DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].) Go to the next step.
2		No	Go to the next step.
3	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION Is any other DTC or pending code stored?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.5].)
3		No	DTC troubleshooting completed.

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