O2 SensorLow ImpactPetrol

P0036 — HO2S Heater Control Circuit (Bank 1 Sensor 2)

The post-catalyst O2 sensor heater circuit is detected as malfunctioning.

6+

Affected Brands

11+

ECU Platforms

3

Related Services

8

Related DTCs

Symptoms

What the driver typically experiences when P0036 is stored

!Check Engine Light
iDelayed O2 sensor warm-up

Why does P0036 appear after tuning?

Often flagged after catalyst modifications when the downstream O2 sensor parameters are adjusted.

How proper calibration can address P0036

Proper calibration includes correct sensor heater management to maintain diagnostic integrity.

Related Tuning Services

Relevant services for the system behind P0036

Catalyst OffLambda OffDTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0036

P0037Low Impact

HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

P0420Moderate Impact

Catalyst System Efficiency Below Threshold (Bank 1)

P0136Low Impact

O2 Sensor Circuit (Bank 1 Sensor 2)

P0137Moderate Impact

Diagnostic Trouble Code P0137

P0056Low Impact

HO2S Heater Control Circuit (Bank 2 Sensor 2)

P0430Moderate Impact

Catalyst System Efficiency Below Threshold (Bank 2)

P0138Moderate Impact

Diagnostic Trouble Code P0138

P0038Moderate Impact

Diagnostic Trouble Code P0038

Affected ECU Platforms

Bosch MG1CS201Siemens/Continental SIMOS18Bosch MG1CS036Bosch MEVD17.2.GBosch MED17.2.2Siemens/Continental EMS2000Bosch MED17.1.27Siemens/Continental SIM2K-260Bosch MED17.7.2Bosch ME17.8.33Delco E83

Commonly Affected Vehicles

FordRanger RaptorBosch MG1CS036
BMW5 Serie - SedanBosch MG1CS201
Mini3-doorBosch MG1CS201
SeatAronaBosch MED17.1.27
VWGolfSiemens/Continental SIMOS18
BMW3erBosch MEVD17.2.G
KiaStingerSiemens/Continental SIM2K-260

Based on data from 6+ vehicle brands. P0036 is not limited to these models.

Frequently Asked Questions

What does P0036 mean?â–¼
The post-catalyst O2 sensor heater circuit is detected as malfunctioning.
Why does P0036 appear after ECU tuning?â–¼
Often flagged after catalyst modifications when the downstream O2 sensor parameters are adjusted.
How do you prevent P0036 during remapping?â–¼
Proper calibration includes correct sensor heater management to maintain diagnostic integrity.
Which vehicles are affected by P0036?â–¼
P0036 is commonly found on Ford, BMW, Mini, Seat, VW, Kia vehicles equipped with Bosch MG1CS201, Siemens/Continental SIMOS18, Bosch MG1CS036, Bosch MEVD17.2.G ECU platforms.
What other codes appear alongside P0036?â–¼
P0036 frequently appears together with P0037, P0420, P0136, P0137, P0056. These related codes typically originate from the same system modification and should be addressed together in the calibration.

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