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TuningBot DTC Database · v4.37.14

B0121 Fluid Reservoir Level Sensor F

Generic (OBD-II) interpretation in the TuningBot DTC database.

B · BodyBodyOBD2

What B0121 means

B0121
Fluid Reservoir Level Sensor F Generic · body Data confidence 65%

The control module detected a fault associated with the Fluid Reservoir Level Sensor F circuit or function; the stored code identifies the affected component rather than a single failure mode.

Related and nearby codes

How to read B0121

B

Body: airbags, comfort and cabin systems.

0

Generic SAE-standard code: same meaning on every make.

121

Specific fault index within the subsystem.

Frequently asked questions about B0121

What does B0121 mean?

Fluid Reservoir Level Sensor F. The control module detected a fault associated with the Fluid Reservoir Level Sensor F circuit or function; the stored code identifies the affected component rather than a single failure mode.

Is B0121 generic or manufacturer-specific?

B0121 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove B0121 at file level?

Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether B0121 is removable in your case.

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