DTC B2548


id070200731400

DTC

B2548

Water heater lockout mode

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

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.