DTC B1342, B2207, B2463, B2464, B2465, B2466, B2467 [WATER HEATER SYSTEM]


id070228815600

DTC

B1342

Malfunction in water heater unit

B2207

Water heater unit ROM checksum error

B2463

Overheat

B2464

Start time exceeded

B2465

Start counter overrun/system locked

B2466

Overheat counter overrun/system locked

B2467

Water heater unit cool down time exceeded

DETECTION CONDITION
•  CPU detects malfunction in water heater unit
POSSIBLE CAUSE
•  Water heater unit malfunction
―  CPU malfunction
―  Glow plug malfunction
―  Flame detection sensor malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT WATER HEATER UNIT
•  Replace the water heater unit.
•  Perform the Combustion Test.
•  Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.