P1718 EEPROM Integrity Failure

P1718 code - An attempt to program/write to the internal EEPROM failed, also checks at power down. One trip fault. Three good trips to turn off the MIL.


P1718


Possible causes P1718 code

- Powertrain Control Module (PCM) Software update
- Excessive resistance in the PCM power or ground circuits
- Powertrain Control Module (PCM)

Diagnostic test P1718 code

Step 1. DTC is active
Diagnose and repair any other DTCs set in the PCM before proceeding with this test.
Turn the ignition on, with the scan tool clear DTCs. Start the engine and allow it to reach operating temperature.
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
It may be necessary to test drive the vehicle in order for this DTC to set. With the scan tool select view DTCs.

Is the DTC active at this time?

Yes, go to step 2.
No, perform the PCM intermittent condition.

Step 2. PCM odometer mileage not programmed
Turn the ignition on, with the scan tool attempt to perform the program PCM odometer function. With the scan tool clear DTCs. Start the engine allow the engine to reach normal operating temperature. Witht the scan tool select view DTCs.

Is the status active for this DTC?

Yes, go to step 3.
No, the SRI mileae has been succesfully programmed into the PCM. Test complete.

Step 3. Checking the PCM power and ground circuits
Perform the CHECKING THE PCM POWER AND GROUND CIRUCITS diagnostic procedure. Using the wiring diagram/schematic as a guide, inspect the Powertrain Control Module (PCM) wiring and connectors. Look for any chafed, pierced, pinched or partially broken wires, look for broken, bent, pushed out or corroded terminals, perform any technical service bulletins that may apply.

Were any problems found?

Yes, repair as necessary.
No, go to step 4.

Step 4. Powertrain Control Module (PCM)
Turn the ignition on, with the scan tool, attempt to perform the program PCM odometer function. With the scan tool clear DTCs. Start the engine, allow the engine to reach normal operating temperature. With the scan tool, select view DTCs.

Is the DTC active at this time?

Yes, replace and program the Powertrain Control Module. Perform the Powertrain verification test.
No, the SRI mileage has been succesfully programmed into the PCM. Test is complete.

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