• Bosch SPE53C*** Error Code E01 — Pump relay failure on control board
• Bosch SPE53C*** Error Code E02 — Heater relay failure
• Bosch SPE53C*** Error Code E03 — Water not heating — heater element or NTC failure
• Bosch SPE53C*** Error Code E04 — Flow meter error — no water flow detected
• Bosch SPE53C*** Error Code E06 — Door lock malfunction
• Bosch SPE53C*** Error Code E08 — Water level in tub too low
• Bosch SPE53C*** Error Code E09 — Heating element failure
• Bosch SPE53C*** Error Code E14 — Flow meter malfunction
• Bosch SPE53C*** Error Code E15 — Water in base — float switch activated (AquaStop)
• Bosch SPE53C*** Error Code E16 — Water in tub while door is open
• Bosch SPE53C*** Error Code E17 — Water intake temperature too high
• Bosch SPE53C*** Error Code E18 — Water not filling within time limit
• Bosch SPE53C*** Error Code E19 — Diverter valve failure (select models)
• Bosch SPE53C*** Error Code E21 — Drain pump malfunction
• Bosch SPE53C*** Error Code E22 — Filter blocked — clean filter
• Bosch SPE53C*** Error Code E23 — Drain pump relay failure
• Bosch SPE53C*** Error Code E24 — Drain blocked — kink in hose or filter clogged
• Bosch SPE53C*** Error Code E25 — Drain pump blocked — check filter and pump
• Bosch SPE53C*** Error Code E27 — Power supply voltage too low