Aston Martin diagnostic trouble code
P0133: O2 Circuit Slow Response (Bank 1, Sensor 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
- Oxygen sensors
- Manual coverage
- V8 Vantage, DB9
- Warning-lamp status
- V8 Vantage: MIL; DB9: MIL
What Aston Martin code P0133 means
O2 Circuit Slow Response (Bank 1, Sensor 1)
DB9 preliminary diagnostic manual · section 2-36
Manufacturer fault-analysis procedure
Manual fault definition
P0133 - HO2S1-1 slow response
P0153 - HO2S2-1 slow response
P0153 - HO2S2-1 slow response
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.
These codes will only occur if the oxygen sensor
performance is seriously degraded.
If a P0133 or P0153 code is present and possible
circuit faults have been eliminated, replace the
relevant sensor. Run a KOER test to ensure that
the problem is resolved.
Open the corresponding manual page for wiring diagrams and figures
Primary or Secondary Powertrain Control Module
(PCM). Check that you are working on the correct
half of the engine.
These codes will only occur if the oxygen sensor
performance is seriously degraded.
If a P0133 or P0153 code is present and possible
circuit faults have been eliminated, replace the
relevant sensor. Run a KOER test to ensure that
the problem is resolved.
Supporting owner context
What owners have reported
Owners report that slow-response oxygen-sensor codes can be intermittent. A one-off code may not recur, while repeated returns justify sensor, wiring and exhaust checks.
This is supporting owner-reported context, not a replacement for the manufacturer procedure or a diagnosis of every vehicle.
Read the related owner discussion