Question 1

What does error code 66226 mean on the Nanni V6.350 engine?

Accepted Answer

The PDF manual for the Nanni V6.350 does not mention error code 66226 in its diagnostic tables. This code comes from the engine control electronic system (ECU).

According to the manual, the main diagnostic alerts for the V6.350 include dashboard warning lights for oil pressure, overheating, water in the fuel filter, and system faults. However, detailed error codes (like 66226) are not documented in the standard manual.

What to do:

Note the context - Which warning light is on? Is there an audible alarm? When does the code appear (at startup, under load)?
Contact Nanni Diesel directly: +33 (0)5 56 22 30 60 or contact@nannidiesel.com - they have access to complete technical bulletins and diagnostic tables
Consult an authorized Nanni technician with access to service manuals - only a complete electronic diagnosis will read this code accurately

66226 is typically an electronic code related to a sensor, pressure, or engine regulation system - online troubleshooting without the proper diagnostic equipment may be inaccurate.

Question 2

What does error code 62266 mean on the Nanni V6.350 engine?

Accepted Answer

The PDF manual for the Nanni V6.350 does not specifically list error code 62266. However, on marine diesel engines of this series, diagnostic codes are generated by the electronic control unit based on detected malfunctions.

To identify this particular code:

Check your diagnostic screen: The V6.350 dashboard displays warning lights (battery charge, water in the fuel filter, system fault) and may show a more detailed message on the engine controller.
Consult the complete manual: This code may be included in the manufacturer's complete technical documentation or in the service manual, beyond the user manual provided here.
Contact an authorized Nanni dealer: Dealerships have complete diagnostic tables for this 4-cylinder 257 kW engine and can decode this code accurately.

Also note that on diesel engines of this power (350 hp), error codes may be related to the injection system, temperature/pressure sensors, or the turbocharging system.

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