Aston Martin diagnostic trouble code

P0201: Injector Circuit / Open - Cylinder 1

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
Fuel and air
Manual coverage
V8 Vantage, DB9
Warning-lamp status
V8 Vantage: MIL; DB9: MIL

What Aston Martin code P0201 means

Injector Circuit / Open - Cylinder 1

DB9 preliminary diagnostic manual · section 2-62

Manufacturer fault-analysis procedure

Manual fault definition

P0201 - P0206 - Injector circuit fault.

Cautions and notes

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

NOTE: If the fault is intermittent, use datalogger to monitor all suspect injector signals during a road test.

If +12v is present, go to step 3.
If +12v is not present, Service the 12 volt supply
as necessary, reconnect the injector circuits.
Clear the fault code. Run a KOER test to ensure
that the problem is resolved.

Test sequence and decision path

1. Connect the WDS or scan tool. Confirm that a
code in the range P0201 - P0206 is logged.
Primary PCM
P0201 - Injector 1 fault - PCM pin C0636-2
P0202 - Injector 2 fault - PCM pin C0636-9
P0203 - Injector 3 fault - PCM pin C0636-5
P0204 - Injector 4 fault - PCM pin C0636-4
P0205 - Injector 5 fault - PCM pin C0636-8
P0206 - Injector 6 fault - PCM pin C0636-3
Secondary PCM
P0201 - Injector 7 fault - PCM pin C2464-2
P0202 - Injector 8 fault - PCM pin C2464-9
P0203 - Injector 9 fault - PCM pin C2464-5
P0204 - Injector 10 fault - PCM pin C2464-4
P0205 - Injector 11 fault - PCM pin C2464-8
P0206 - Injector 12 fault - PCM pin C2464-3

2. Disconnect the suspect injector and switch on the
ignition. Check for +12 volts from injector harness connector pin 2 to chassis ground.

3. Switch off the ignition and install the break-out
box to the harness of the affected PCM.
Open the corresponding manual page for wiring diagrams and figures