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Detroit Fault Codes SPN 96/FMI 13 – GHG14

10/04/2026
SPN 96/FMI 13 - GHG14
Fuel Level Sensor Missing or Not Available
Fuel level sensor is hardwired to instrument cluster. Fuel level signal is multiplexed from instrument cluster to the CPC.
SPN 96/FMI 13
Description This fault indicates a missing fuel level signal at the Common Powertrain Controller (CPC).
Monitored Parameter Fuel Level Status Byte
Typical Enabling Conditions Always Enabled
Monitor Sequence None
Execution Frequency Continuous when enabling conditions met
Typical Duration 10 Seconds
Dash Lamps CEL
Engine Reaction None
Verification Key Cycle

Check as follows:

1. Connect DiagnosticLink® .
2. Check for multiple codes. Are any other fault codes present?
2.1. Yes; if CPC SPN 168/FMI 0/14/18 (battery voltage) or SPN 625/FMI (any) Controller Area Network (CAN) fault codes are present, troubleshoot these first.
2. No; if only SPN 96/FMI 13 fault is present, Go to step 3.
3. Has the CPC been recently reprogrammed?
3.1. Yes; check for proper configuration of the CPC against the server information. Reprogram the CPC with the correct information as necessary.
2. No; refer to Original Equipment Manufacturer (OEM) literature for instrument cluster troubleshooting.

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