P046BCatalyst Temperature Sensor 1/2 Correlation Bank 2
Generic (OBD-II) interpretation in the TuningBot DTC database.
P · PowertrainEmissionsOBD2
What P046B means
P046B
Catalyst Temperature Sensor 1/2 Correlation Bank 2
Generic · emissions
Data confidence85%
The control module detected a fault associated with the Catalyst Temperature Sensor 1/2 Correlation Bank 2 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Symptoms
MIL illuminated
Possible smell of unburnt fuel or reduced performance in severe cases
Possible causes
Aged or damaged catalytic converter
Downstream oxygen sensor fault giving a wrong efficiency reading
Exhaust leak
Misfire or mixture fault overloading the catalyst
Recommended checks
Compare upstream and downstream oxygen sensor signals
Check for exhaust leaks
Check for stored misfire or mixture codes first
Verify catalyst temperature plausibility where available
Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
46B
Specific fault index within the subsystem.
Frequently asked questions about P046B
What does P046B mean?
Catalyst Temperature Sensor 1/2 Correlation Bank 2. The control module detected a fault associated with the Catalyst Temperature Sensor 1/2 Correlation Bank 2 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P046B generic or manufacturer-specific?
P046B is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P046B at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
ItalianoIT
DeutschDE
EspañolES
PortuguêsPT
FrançaisFR
РусскийRU