P0460

DTC P0460

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview)
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview)
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)



DTC Descriptor
DTC P0460
- Fuel Level Sensor Range/Performance




Diagnostic Fault Information






Circuit/System Description

The fuel level sensor changes resistance in response to the fuel level. The engine control module (ECM) monitors the signal circuit of the fuel level sensor in order to determine the fuel level. When the fuel tank is full, the fuel level sensor resistance is low and the ECM senses a low signal voltage. When the fuel tank is empty, the fuel level sensor resistance is high and the ECM senses a high signal voltage. The ECM uses the signal circuit of the fuel level sensor in order to calculate the percentage of fuel remaining in the tank. The ECM sends the fuel level information via the serial data circuit to the IPC in order to control the fuel gage and display the fuel level.


Conditions for Running the DTC

The engine is running.


Conditions for Setting the DTC

Fuel level sensor data invalid.


Action Taken When the DTC Sets

* The fuel gage defaults to empty.
* The ECM records the operating conditions at the time that the diagnostic test fails. The ECM displays the failure information in the Failure Records on the scan tool.



Conditions for Clearing the DTC

* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 40 malfunction-free warm-up cycles.



Diagnostic Aids

DTC P0460 may set simultaneously with DTCs P0461, P0462 or P0463. Before diagnosing DTC P0460, make sure DTCs P0461, P0462 or P0463 are not set in the ECM. If any of the DTCs are set in the ECM, diagnose them first and then verify that DTC P0460 does not reset in the IPC. The same malfunctions that set DTCs P0461, P0462 or P0463 in the ECM may set DTC P0460 in the IPC.


Reference Information
Schematic Reference

Instrument Cluster Schematics (Instrument Cluster Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Instrument Cluster Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information


Circuit/System Verification

1. Ignition ON and the scan tool installed, perform the IPC Instantaneous Tank Content Control Test from the ECU Control menu. Verify that the fuel gage pointer moves from the minimum value to the maximum value as commanded.

• If the fuel gage does not perform the Instantaneous Tank Content Control Test, replace the IPC.




Component Testing

1. Ignition OFF, remove the fuel level sender and verify there are no obstructions interfering with the fuel level sender.

• If any interference is present, repair the fuel sender interference.

2. Ignition OFF, disconnect the X1 harness connector at the fuel pump and sender assembly.
3. While sweeping the fuel level sensor through its full range of motion, test for a minimum resistance value of less than 41 ohms and a maximum value greater than 119 ohms between the signal terminal C and the low reference terminal B.

• If not within the specified range, replace the fuel level sensor.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Fuel Level Sensor Replacement (Service and Repair)