DTC 055. Chevrolet Epica 2005

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2005 🢒 Epica 🢒 DTC 🢒 DTC 055

Circuit Description

The electronic control module (ECM) utilizes an electronically erasable programmable read only memory (EEPROM). The EEPROM contains program information and the calibrations required for engine diagnostics operation.

Conditions for Setting the DTC

Microprocessor configuration register is not equal to $OB.

Diagnostic Aids

The DTC 055 indicates that the contents of the EEPROM have changed since the ECM was programmed. The only possible repair is ECM replacement. Remember to program the replacement ECM with the correct software and calibration for the vehicle.

Step	Action	Yes	No
1	Determine whether the Diagnostic System Check has been performed. Was the Diagnostic System Check performed?	Go to Step 2	Go to Diagnostic System Check - Engine Controls
2	Replace the engine control module (ECM). Refer to Engine Control Module Replacement . Perform the Diagnostic System Check. Is the repair complete?	System OK	--

Step

Action

Yes

Determine whether the Diagnostic System Check has been performed.

Was the Diagnostic System Check performed?

Go to Step 2

Go to Diagnostic System Check - Engine Controls

Replace the engine control module (ECM). Refer to Engine Control Module Replacement .
Perform the Diagnostic System Check.

Is the repair complete?

System OK