Bosch Range F13 Signals Corrupted Stored Settings

What F13 means

On older Bosch Evolution ranges F13 is the memory-checksum alarm. The board read back the settings it had stored and the totals did not match. The service manual treats it as a sibling of the processor-ID error and blames the same suspects: surges, voltage swings and trouble in the incoming supply. Its test is identical too, a thirty-second interruption of power.

Common causes of F13

Settings memory that has been corrupted
Surge during a memory write
Board that has worn out

✓ One safe check you can try

1. At the breaker, cut power for thirty seconds. 2. Restore it and watch the display. 3. This is the manual's own test: if the code returns at once, the memory really is corrupt. 4. Then stop cycling power and call us.

! Why to stop there

A reset loop can wear down a memory that is already corrupt.
Skipping the supply check lets a replacement board be corrupted the same way.
Opening the control area puts your hands near live wiring.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Range codes

F91Bosch Range F91 Means the Unlock Attempts Ran Out F92Bosch Range F92: Oven Believes the Door Is Open F93Bosch Range F93 Is the Lock-Side Twin of F90 F94Bosch Range F94: Door Lock Attempts Exhausted E122Bosch Range E122? Check the Meat Probe First E126Bosch Range E126 and the Latch Switch That Went Silent E201Bosch Range E201 Is About the Warming Drawer E302Bosch Range E302 Warns That the Control Board Is Too Hot

F13F13 questions

Do I lose my oven settings?

Expect so. This code concerns the memory that holds them, so the clock and any temperature offset must be entered again once the range is working.

Is a range this age worth the repair?

Often, if the rest of it is sound, but get the board price first since parts for this generation are no longer guaranteed to be available.

Can a power outage cause it?

It can. Surges and voltage swings are on the manual's list of causes, so tell us about recent outages or flickers when you book the visit.