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DTC B2548

id070200731400

DTC | B2548 | Water heater lockout mode
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DETECTION CONDITION | • This DTC is stored if the water heater unit detects the same DTC three times and the water heater unit then suspends system operation for safety reasons.
POSSIBLE CAUSE | • Water heater unit malfunction • Fuel pump (water heater system) malfunction • Generator malfunction • Battery malfunction • Open or short circuit in related harness

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT WATER HEATER UNIT • Perform the lockout reset. (See Lockout Reset.) • Read DTCs using the SST (WDS or equivalent) • Are any DTCs present? | Yes | Go to applicable DTC troubleshooting.
No | Troubleshooting completed.