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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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DTC P0460:00 [PCM (SKYACTIV-G 2.0)]

DTC P0460:00	Fuel level sensor circuit malfunction
DETECTION CONDITION	The PCM monitors the fuel tank level sensor output signal. If the difference between maximum and minimum value of input signal is 25 % or more for 14 s, the PCM determines that there is a fuel level sensor circuit malfunction. Diagnostic support note This is a continuous monitor (CCM). 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	Instrument cluster malfunction Incorrectly installed fuel gauge Fuel level input signal circuit malfunction Fuel gauge sender unit 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 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.
3	VERIFY RELATED PENDING CODE AND/OR DTC Switch the ignition off, then ON (engine off). Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].) Are any other PENDING CODEs and/or DTCs present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 2.0)].)
		No	Go to the next step.
4	INSPECT NON-GENUINE ACCESSORY FOR MALFUNCTION Remove any non-genuine accessory. Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0)].) Perform the KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.0)].) Is the PENDING CODE for this DTC present?	Yes	Go to the next step.
		No	Explain to the customer that the vehicle is normal. Go to Step 8.
5	VERIFY STORED DTC IN INSTRUMENT CLUSTER Switch the ignition off, then ON (engine off). Retrieve the instrument cluster DTC using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER].)
		No	Go to the next step.
6	INSPECT FUEL GAUGE SENDER UNIT Switch the ignition off. Inspect the fuel gauge sender unit. (See FUEL GAUGE SENDER UNIT INSPECTION.) Is there any malfunction?	Yes	Replace the fuel gauge sender unit, then go to the next step. (See FUEL PUMP UNIT DISASSEMBLY/ASSEMBLY [SKYACTIV-G 2.0].)
		No	Go to the next step.
7	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-G 2.0)].) Perform the KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.0)].) 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 2.0].) Go to the next step.
		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0)].) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 2.0)].)
		No	DTC troubleshooting completed.

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