Aston Martin diagnostic trouble code

P1270: Engine RPM or Vehicle Speed Limiter Reached

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
Other vehicle system
Manual coverage
V8 Vantage, DB9
Warning-lamp status
V8 Vantage: Not stated; DB9: MIL

What Aston Martin code P1270 means

Engine RPM or Vehicle Speed Limiter Reached

DB9 preliminary diagnostic manual · section 2-220

Manufacturer fault-analysis procedure

Manual fault definition

P1270 - This code indicates that the engine speed
has exceeded the maximum limit.

Cautions and notes

NOTE: This code may be logged if the vehicle has been
subject to any of the following conditions:
Excessive wheel slip on ice, snow, etc.
Excessive engine RPM in neutral

CAUTION: This code 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: This code is included to indicate that the
driver has reached the engine rev limit. There may
be a complaint of misfiring at high engine speed.
This code gives the dealer an explanation for the
customers perceived misfire when no misfire
codes are logged.

Test sequence and decision path

1. Connect the WDS. Record the logged DTCs and
then reset the PCM.

2. Check the vehicle history for evidence of hard
driving or similar operation of the engine to its
limits.
If there is evidence of operating the vehicle to its
limits, reset the PCM and run the engine. Briefly
accelerate the engine to about 6000 rpm and let
it return to idle. Accelerate the engine to about
6000 rpm again and let it return to idle.
Check for logged DTCs.
If P1270 is not logged again, there is no evident
engine fault. Testing is complete.
Open the corresponding manual page for wiring diagrams and figures