Detroit Fault Codes SPN 96/FMI 2 – GHG14
SPN 96/FMI 2 - GHG14
Fuel Tank Level Sensor Stuck in Position
It is important to obtain information from the customer on when the Check Engine Lamp (CEL) occurs and if there were any performance concerns or exhaust smoke.
SPN 96/FMI 2
| Description | Fuel Tank Level Sensor Stuck in Position |
|---|---|
| Monitored Parameter | Fuel Tank Level |
| Typical Enabling Conditions | Always Enabled |
| Monitor Sequence | None |
| Execution Frequency | Always Enabled |
| Typical Duration | 5 Seconds |
| Dash Lamps | MIL |
| Engine Reaction | None |
| Verification | Engine RPM = idle or higher |
Check as follows:
1. Did SPN 96/FMI 2 appear after the fuel system was repaired or fuel filter maintenance was performed?
1.1. Yes; clear codes and road test to verify complaint. If code does not set, release the vehicle. If code sets, Go to step 2.
1.2. No; Go to step 2.
2. Turn the ignition ON (key ON, engine OFF).
3. Check and record fuel level in all fuel tanks.
3.1. If fuel level is below ¼ tank (or 25%), add fuel and road test vehicle. If code does not become active during road test, release the truck. If the code becomes active during the road test with over ¼ tank (or 25%) of fuel, Go to step 4.
3.2. If the fuel level is over ¼ tank (or 25%), question the driver about the fuel level when the code was set. If the level was under ¼ tank (or 25%), fuel sloshing in the tank could be the cause of aerated fuel that could cause this code. If the fuel level was over ¼ tank (or 25%) when the code was set, Go to step 4.
4. Check for fuel contamination, including Diesel Exhaust Fluid (DEF), water, gasoline, kerosene, coolant, etc.
4.1. If contamination is found, contact the Detroit™ Customer Support Center at 800-445-1980.
4.2. If no contamination is found, Go to step 5.
5. Visually inspect for external fuel leaks on the engine and on the chassis.
5.1. If a leak is found, repair leak. Refer to section “Verify Repairs” .
5.2. If no leaks are found, Go to step 6.
6. Using DiagnosticLink® , check for multiple codes.
6.1. If any of the additional fault codes are active, perform the associated diagnostics first.
6.2. If no additional fault codes are active, replace fuel level sensor. Check OEM procedures.
7. Verify repairs. Refer to section “Verify Repairs” .
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