DDEC III and DDEC IV nonvolatile memory replacement flash 53

The DDEC III doesn’t have RTC battery issues like the DDEC IV. The weak link in a DDEC III is the memory. When the diagnostic code for Nonvolatile memory failure or Nonvolatile memory data incorrect (Flash 53) pops up most technicians believe an ECMs memory chip has failed and it’s time to core it. Sometimes they’re right and fuel and oil damaged a trace or component in digital processes but most of the time these DDEC IIIs are ready to be put back into service after the memory and a few other parts are replaced. If Memory failures and data corruption is allowed to go on it will get worse over time and eventually progress to a no start issue.

DDEC III and DDEC IV memory replacement

Nonvolatile memory failure and Nonvolatile memory data incorrect (Flash 53)

If those two fault codes are active and cannot be cleared then it’s not too late to save the program in your DDEC III. If you get it here soon we can probably recover it, check it for corruption then install it into the new memory. DDEC IVs can also have this problem.

DDEC III and DDEC IV memory replacement

  • After replacement the new memory is tested by running an overnight test on a test bench and then checking the stored data. That also checks to make sure the new memory isn’t defective. 
  • Average job completion time is 3 business days provided other scheduled jobs are not pending. 
  • Expediated service is $650 + shipping when available 
  • If oil, fuel, or water has contaminated the circuit board traces or circuit board components then an additional fee gets added to the job to cover the extra work. *The additional costs range from $50 to $250 depending on the amount of extra work that was needed to get the circuit board and its components cleaned up. If circuit board traces are oxidized, shorted, broken or other damage is found and/or other major components are damaged and need replaced then the job gets upgraded to a repair.

Estimated cost $500* + Return shipping

Detroit Diesel DDEC IV ECM Battery and memory replacement estimated cost $700 + return shipping

Scroll to Top