Diagnostic Aids
Use the Freeze Frame and/or Failure Records data in order to locate an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data may aid in determining the number of miles since the DTC set. The Fail Counter and Pass Counter can also aid in determining the number of ignition cycles that the diagnostic reported a pass and/or fail. Operate the vehicle within the same freeze frame conditions, RPM, engine load, vehicle speed, temperature, etc. This will isolate when the DTC failed.
Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
DTC P0462
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
- | Go to Step 4 | Go to Step 3 |
| 3 | Connect a test lamp between the fuel level sensor signal circuit on the female terminal side and battery voltage. Does the test lamp illuminate? |
- | Go to Step 5 | Go to Step 7 |
| 4 | Test the fuel level sensor signal circuit for a short to ground. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 7 |
| 5 | Test the fuel level sensor signal circuit for a short to ground between C413 and the fuel level sensor. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 6 |
| 6 | Inspect for poor connections at the harness connector of the fuel level sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 8 |
| 7 | Inspect for poor connections at the harness connector of the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 10 | Go to Step 9 |
| 8 | Replace the fuel level sensor. Refer to Fuel Level Sensor Replacement (Malibu Sedan)
and Fuel Level Sensor Replacement (Malibu MAXX)
in Engine Controls - 2.2L or to Fuel Level Sensor Replacement (Malibu Sedan)
and Fuel Level Sensor Replacement (Malibu MAXX)
in Engine Controls - 3.5L. Did you complete the replacement? |
- | Go to Step 10 | - |
| 9 | Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement
in Engine Controls - 2.2L or to Powertrain Control Module (PCM) Replacement
in Engine Controls - 3.5L. Did you complete the replacement? |
- | Go to Step 10 | - |
| 10 |
|
- | Go to Step 2 | System OK |