Aston Martin diagnostic trouble code

P0605: Powertrain Control Module Read Only Memory (ROM) Error

Use this reference to understand the recorded condition, confirm the available V8 Vantage or DB9 manual coverage, and follow the documented diagnostic checks before replacing parts.

Code family
Powertrain
Vehicle system
Electrical and control modules
Manual coverage
V8 Vantage, DB9
Warning-lamp status
V8 Vantage: Not stated; DB9: MIL

What Aston Martin code P0605 means

Powertrain Control Module Read Only Memory (ROM) Error

DB9 preliminary diagnostic manual · section 2-140

Manufacturer fault-analysis procedure

Manual fault definition

P0605 - The PCM has detected an EPROM error.

Cautions and notes

CAUTION: This code may be generated in the
Primary or Secondary Engine Control Module
(PCM). Check that you are working on the correct
half of the engine.

NOTE: This code indicates a serial communication fault
within the PCM.

Test sequence and decision path

1. Connect the WDS and confirm that P0605 is
logged.

2. Run a KOER test. Recheck the logged fault codes

3. If P0605 is logged again, use WDS to reprogram
(reflash) the PCM.

4. Repeat the KOER test and recheck for logged fault
codes.

5. If P0605 is logged again, replace the PCM
Open the corresponding manual page for wiring diagrams and figures