Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA2015TLX BASE, 2.4L ENGREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEMODE 6 - ACURASAE J1979 SERVICE $06 INFORMATION BY OBD MONITOR IDCATALYST (BANK 1)
2015 Acura TLX Base, 2.4L Eng
Catalyst (Bank 1)
2015 Acura TLX Base, 2.4L EngSECTION Catalyst (Bank 1)
DTC P0420: MONITOR ID $21: TEST ID $A1
| OBD Monitor ID | $21 | Test ID | $A1 | Unit and Scaling ID | $0B |
|---|---|---|---|---|---|
| DTC | P0420 | ||||
| Test Description | Catalyst capability, monitored by measuring the stability of the secondary heated oxygen sensor output value. | ||||
| Store Timing | Normal judgment/Failure judgment | ||||
| Conversion to Engineering Units | Measured value: Output value (Decimal) x 0.001 (V) The lowest limit value: Not applicable The highest limit value: Output value (Decimal) x 0.001 (V) |
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.