OBD-II code · Powertrain (generic)
P00D5 HO2S Sensor Correlation Bank 1 Sensor 1/Bank 1 Sensor 2
Pre- and post-cat oxygen sensors on bank 1 do not correlate as expected — typical sign of catalyst inefficiency or one failed sensor.
Is it safe to drive with P00D5?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyCatalyst aged or contaminated
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–4 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oxygen Sensor B1s1, Oxygen Sensor B1s2, Catalyst
Related codes
- P00D6HO2S Sensor Correlation Bank 2 Sensor 1/Bank 2 Sensor 2
- P00D2HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 2
- P00D3HO2S Heater Control Circuit Range/Performance Bank 2 Sensor 1
- P00D4HO2S Heater Control Circuit Range/Performance Bank 2 Sensor 2
- P00D7Turbocharger/Supercharger Bypass Valve A Temperature Too High
- P00D8Turbocharger/Supercharger Bypass Valve B Temperature Too High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.