ECM DTC EO58: Pass Key Fuel Enable Problem: Description

Code EO58 is an indication that the Pass Key Fuel Enable Input has failed after a good signal was received in a given engine run cycle. The Pass Key system enables engine operation by;

1. Allowing the starter motor to engage.
2. Issuing a Fuel Enable signal to the ECM.

Once the engine is running the ECM continuously monitors the Fuel Enable signal, testing for a circuit or Pass Key module failure that would prohibit a positive fuel enable on future ignition cycles. The ECM will not cancel fuel injection after it has been approved within a given ignition cycle. Therefore, stalling conditions cannot be the result of Pass Key system failures.