P013A

O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 2)

DTC P013A, sometimes indicated as P013A00 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing o2 sensor slow response - rich to lean (bank 1 sensor 2).

The engine control module (ECM) monitors the oxygen sensor voltage to determine the air/fuel mixture. The ECM sets the P013A code when the oxygen sensor voltage indicates a slow response to a change in the air/fuel mixture from rich to lean.
There are several possible causes for this code, including a faulty oxygen sensor, a faulty ECM, or a vacuum leak.
If the code is caused by a faulty oxygen sensor, the sensor should be replaced. If the code is caused by a faulty ECM, the ECM should be replaced. If the code is caused by a vacuum leak, the leak should be repaired.

  • P013A: O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 2)
  • P013A: O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 2)
  • P013A: O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2
  • P013A: O2 Sensor Slow Response - Rich to Lean
  • P013A: Heated oxygen sensor (HO2S) 2, bank 1 – slow response rich to lean
  • P013A 00: Heated oxygen sensor (HO2S) 2, bank 1 - slow response rich to lean

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • Mil - BACK OVER PREVENTION
    MAZDA: Mil on with dtc po451 and/or po12a some customer s may complain about a mil on with dtc P0451 (fuel tank pressure sensorl sensor characteristic malfunction) and/or P013A (ho2s: slow response (during transition from rich to lean)) recall 86
  • L-TT-0311-22 Rev - BACK OVER PREVENTION
    LEXUS: Tt: customers may complain of a mil on condition. Dtc P013A may be retrieved from the engine ecm: ?P013A ? Oxygen sensor slow response ? Rich to lean bank 1 sensor 2
  • L-TT-0311-22 - BACK OVER PREVENTION
    LEXUS: Tt: customers may complain of a mil on condition. Dtc P013A may be retrieved from the engine ecm: ?P013A ? Oxygen sensor slow response ? Rich to lean bank 1 sensor 2
  • A0120712059514_3 - ENGINE (PWS)
    AUDI: This bulletin contains a software update that addresses dtc P013B00 and/or P013A00.
  • A0120662059514_2 - ELECTRICAL SYSTEM:SOFTWARE
    AUDI: This bulletin contains a softwre updaet that addresses dtc P013B00 and/or P013A00.
  • A0120642059514_1 - ELECTRICAL SYSTEM:SOFTWARE
    AUDI: This bulletin contains a softwre updaet that addresses dtc P013B00 and/or P013A00.
  • S2025000003 - ENGINE AND ENGINE COOLING
    FCA: Persistent or repeating P013A and / or P014C dtc
  • S2025000003 - ENGINE AND ENGINE COOLING
    FCA: Persistent or repeating P013A and / or P014C dtc
  • S2025000003 - EQUIPMENT
    FCA: Persistent or repeating P013A and / or P014C dtc
  • L-SB-0048-19_Rev - ENGINE AND ENGINE COOLING
    LEXUS: Tsb: some 2020 model year nx300h vehicles equipped with a 2ar-fxe engine may exhibit a mil on condition with diagnostic trouble code (dtc) P013A (oxygen sensor slow response ? Rich to lean bank 1 sensor 2). This condition may be caused by a
  • L-SB-0048-19 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
    LEXUS: Tsb: some 2020 model year nx300h vehicles equipped with a 2ar-fxe engine may exhibit a mil on condition with diagnostic trouble code (dtc) P013A (oxygen sensor slow response ? Rich to lean bank 1 sensor 2). This condition may be caused by a
  • TSB 19-2389 - ENGINE AND ENGINE COOLING
    FORD: Some 2013-2019 explorer vehicles equipped with a 3.5l twin independent variable camshaft timing (ti-vct) engine may exhibit an illuminated malfunction indicator lamp (mil) with diagnostic trouble codes (dtcs) P013A and/or P013C stored in th
  • A0119282056410_1 - UNKNOWN OR OTHER
    AUDI: This informational bulletin contains instructions for when dtc P013B00 and dtc P013A00 are stored with the mil on for a pss.
  • T-SB-0094-19 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
    TOYOTA: Tsb: some 2016 - 2019 model year tacoma vehicles equipped with a 2gr-fks engine may exhibit a mil on condition with diagnostic trouble codes (dtcs) P013A00 and/or P013C00 (o2 slow response) due to an incomplete weld around the front exhaust
  • TSB 19-2244 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
    FORD: Some 2013-2019 explorer vehicles equipped with a 3.5l twin independent variable camshaft timing (ti-vct) engine may exhibit an illuminated malfunction indicator lamp (mil) with diagnostic trouble codes (dtcs) P013A and/or P013C stored in th
  • TSB19-2158 - POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
    LINCOLN: Some 2017-2019 fusion hybrid/fusion energi/mkz hybrid and 2017-2018 c-max vehicles built on or before 27-jan-2019 may exhibit an illuminated malfunction indicator lamp (mil) with diagnostic trouble code (dtc) P013A stored in the powertrain
  • TSB 19-2065 - POWER TRAIN
    LINCOLN: Some 2017 fusion hybrid/fusion energi/mkz hybrid/c-max and 2019 fusion hybrid/mkz hybrid vehicles built on or before 27-jan-2019 may exhibit an illuminated malfunction indicator lamp (mil) with diagnostic trouble code (dtc) P013A stored in
  • SSM 47502 - ENGINE AND ENGINE COOLING
    LINCOLN: Some 2017-2018 fusion, mkz and c-max vehicles with 2.0l gas/electric engine may exhibit an illuminated mil with dtc P013A in the powertrain control module(pcm). This may be due to an exhaust system leak. Exhaust leak inspection should be co
  • PIP5123B - ELECTRICAL SYSTEM
    CHEVROLET: This preliminary information communication provides information to the technician about vehicles that have diagnostic trouble code P2270 set with diagnostic trouble codes P0140, P0139, P0138, P0137, P013A, and P013B. Technician should inspe
  • PIP5123 - ELECTRICAL SYSTEM
    CHEVROLET: This preliminary information communication provides information to the technician about vehicles that have diagnostic trouble code P2270 set with diagnostic trouble codes P0140, P0139, P0138, P0137, P013A, and P013B. Technician should inspe
  • PIP5123A - ELECTRICAL SYSTEM
    CHEVROLET: This preliminary information communication provides information to the technician about vehicles that have diagnostic trouble code P2270 set with diagnostic trouble codes P0140, P0139, P0138, P0137, P013A, and P013B. Technician should inspe
  • 01-009-15-3033 - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
    MAZDA: Some vehicles may exhibit a check engine light on with dtc P013A:00 stored in memory. Dtc P013A:00: ho2s slow response (during transition from rich to lean) this concern may be caused by an impact from a speed-bump or other source, causin
  • 01-004-14-2893 - POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
    MAZDA: Some vehicles may experience the mil on with dtc P013A:00 (ho2s circuit slow response). This is caused by improper control logic of the pcm. To correct the problem, the control logic of the pcm has been changed.
  • DTC P0451 - FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
    MAZDA: Mil on with dtc P0451 and/or P013A some customers may complain about a mil on with dtc P0451 (fuel tank pressure sensor: sensor characteristic malfunction) and/or P013A ho25s: slow response (during transition from rich to lean)). Recall 86
  • 51 - ELECTRICAL SYSTEM:IGNITION:MODULE
    KIA: Subject regarding reports of diagnostic trouble codes P013A or p013 being stored. *tt
Consumer Complaints for this DTC



2013 MAZDA CX-5 with 80000.0 miles

Initially the check engine light came on with no notice drivability concern. Used obd scanner and retrieved two codes: P0172 running rich, P013A downstream o2 slow switch. Two days later the car stalled two time, both times right after vehicle stopped completely with brake pedal applied. Stopped driving the vehicle for severe safety concern and will send the car to the dealership. Vehicle has not been modified, and has 80k miles, 6.5 yrs of service, with regular scheduled maintenance.
ENGINE, FUEL/PROPULSION SYSTEM

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