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.
2021 Honda Clarity Plug-In HybridFACTORY OEM SERVICE PROCEDURE
Supplemental Restraint System DTCS
DTC (B0001-11) - (B0020-2B)
| DTC | Detection Item |
|---|---|
| B0001-11 | Short to ground in the driver's airbag first inflator |
| B0001-12 | Short to power in the driver's airbag first inflator |
| B0001-13 | Open or increased resistance in the driver's airbag first inflator |
| B0001-1A | Decreased resistance in the driver's airbag first inflator |
| B0001-2B | Short to another wire harness in the driver's airbag first inflator |
| B0002-11 | Short to ground in the driver's airbag second inflator |
| B0002-12 | Short to power in the driver's airbag second inflator |
| B0002-13 | Open or increased resistance in the driver's airbag second inflator |
| B0002-1A | Decreased resistance in the driver's airbag second inflator |
| B0002-2B | Short to another wire harness in the driver's airbag second inflator |
| B0004-11 | Short to ground in the driver's knee airbag inflator |
| B0004-12 | Short to power in the driver's knee airbag inflator |
| B0004-13 | Open or increased resistance in the driver's knee airbag inflator |
| B0004-1A | Decreased resistance in the driver's knee airbag inflator |
| B0004-2B | Short to another wire harness in the driver's knee airbag inflator |
| B0010-11 | Short to ground in the front passenger's airbag first inflator |
| B0010-12 | Short to power in the front passenger's airbag first inflator |
| B0010-13 | Open or increased resistance in the front passenger's airbag first inflator |
| B0010-1A | Decreased resistance in the front passenger's airbag first inflator |
| B0010-2B | Short to another wire harness in the front passenger's airbag first inflator |
| B0011-11 | Short to ground in the front passenger's airbag second inflator |
| B0011-12 | Short to power in the front passenger's airbag second inflator |
| B0011-13 | Open or increased resistance in the front passenger's airbag second inflator |
| B0011-1A | Decreased resistance in the front passenger's airbag second inflator |
| B0011-2B | Short to another wire harness in the front passenger's airbag second inflator |
| B0020-11 | Short to ground in the driver's side airbag inflator |
| B0020-12 | Short to power in the driver's side airbag inflator |
| B0020-13 | Open or increased resistance in the driver's side airbag inflator |
| B0020-1A | Decreased resistance in the driver's side airbag inflator |
| B0020-2B | Short to another wire harness in the driver's side airbag first inflator |
DTC (B0021-11) - (B0070-2B)
| DTC | Detection Item |
|---|---|
| B0021-11 | Short to ground in the left side curtain airbag first inflator |
| B0021-12 | Short to power in the left side curtain airbag first inflator |
| B0021-13 | Open or increased resistance in the left side curtain airbag first inflator |
| B0021-1A | Decreased resistance in the left side curtain airbag first inflator |
| B0021-2B | Short to another wire harness in the left side curtain airbag first inflator |
| B0028-11 | Short to ground in the front passenger's side airbag inflator |
| B0028-12 | Short to power in the front passenger's side airbag inflator |
| B0028-13 | Open or increased resistance in the front passenger's side airbag inflator |
| B0028-1A | Decreased resistance in the front passenger's side airbag inflator |
| B0028-2B | Short to another wire harness in the front passenger's side airbag inflator |
| B0029-11 | Short to ground in the right side curtain airbag first inflator |
| B0029-12 | Short to power in the right side curtain airbag first inflator |
| B0029-13 | Open or increased resistance in the right side curtain airbag first inflator |
| B0029-1A | Decreased resistance in the right side curtain airbag first inflator |
| B0029-2B | Short to another wire harness in the right side curtain airbag first inflator |
| B0050-11 | Short or decreased resistance in the driver's seat belt buckle switch |
| B0050-13 | Open or increased resistance in the driver's seat belt buckle switch |
| B0050-2B | Short to another wire harness in the driver's seat belt buckle switch |
| B0052-11 | Short or decreased resistance in the front passenger's seat belt buckle switch |
| B0052-13 | Open or increased resistance in the front passenger's seat belt buckle switch |
| B0052-2B | Short to another wire harness in the front passenger's seat belt buckle switch |
| B0070-11 | Short to ground in the driver's seat belt tensioner |
| B0070-12 | Short to power in the driver's seat belt tensioner |
| B0070-13 | Open or increased resistance in the driver's seat belt tensioner |
| B0070-1A | Decreased resistance in the driver's seat belt tensioner |
| B0070-2B | Short to another wire harness in the driver's seat belt tensioner |
DTC (B0072-11) - (B0097-92)
| DTC | Detection Item |
|---|---|
| B0072-11 | Short to ground in the front passenger's seat belt tensioner |
| B0072-12 | Short to power in the front passenger's seat belt tensioner |
| B0072-13 | Open or increased resistance in the front passenger's seat belt tensioner |
| B0072-1A | Decreased resistance in the front passenger's seat belt tensioner |
| B0072-2B | Short to another wire harness in the front passenger's seat belt tensioner |
| B0082-11 | Short to ground in the selectable energy absorption device of the front passenger's seat belt tensioner |
| B0082-12 | Short to power in the selectable energy absorption device of the front passenger's seat belt tensioner |
| B0082-13 | Open or increased resistance in the selectable energy absorption device of the front passenger's seat belt tensioner |
| B0082-1A | Decreased resistance in the selectable energy absorption device of the front passenger's seat belt tensioner |
| B0082-2B | Short to another wire harness in the selectable energy absorption device of the front passenger's seat belt tensioner |
| B0090-4A | Internal failure of the left front impact sensor |
| B0090-87 | No signal from the left front impact sensor |
| B0090-92 | Internal failure of the left front impact sensor |
| B0091-4A | Internal failure of the left side impact sensor (first) |
| B0091-87 | No signal from the left side impact sensor (first) |
| B0091-92 | Internal failure of the left side impact sensor (first) |
| B0092-4A | Internal failure of the left side impact sensor (second) |
| B0092-87 | No signal from the left side impact sensor (second) |
| B0092-92 | Internal failure of the left side impact sensor (second) |
| B0095-4A | Internal failure of the right front impact sensor |
| B0095-87 | No signal from the right front impact sensor |
| B0095-92 | Internal failure of the right front impact sensor |
| B0096-4A | Internal failure of the right side impact sensor (first) |
| B0096-87 | No signal from the right side impact sensor (first) |
| B0096-92 | Internal failure of the right side impact sensor (first) |
| B0097-4A | Internal failure of the right side impact sensor (second) |
| B0097-87 | No signal from the right side impact sensor (second) |
| B0097-92 | Internal failure of the right side impact sensor (second) |
DTC (B00A0 -54) - (U3000-51)
| DTC | Detection Item |
|---|---|
| B00A0-54 | Front passenger's weight sensor not calibrated |
| B00B5-11 | Short or decreased resistance in the driver's seat position sensor |
| B00B5-13 | Open or increased resistance in the driver's seat position sensor |
| B00B5-2B | Short to another wire harness in the driver's seat position sensor |
| B00C0-16 | Internal failure of the front passenger's weight sensor (front inner side) |
| B00C0-4A | Different supplier ID/function ID of the front passenger's weight sensor (front inner side) |
| B00C0-54 | Different serial ID of the front passenger's weight sensor (front inner side) |
| B00C0-87 | No signal from the front passenger's weight sensor (front inner side) |
| B00C0-96 | Internal failure of the front passenger's weight sensor (front inner side) |
| B00C2-16 | Internal failure of the front passenger's weight sensor (rear inner side) |
| B00C2-4A | Different supplier ID/function ID of the front passenger's weight sensor (rear inner side) |
| B00C2-54 | Different serial ID of the front passenger's weight sensor (rear inner side) |
| B00C2-87 | No signal from the front passenger's weight sensor (rear inner side) |
| B00C2-96 | Internal failure of the front passenger's weight sensor (rear inner side) |
| B00D5-14 | Open or short to ground in the front passenger's airbag cutoff indicator |
| B00D5-17 | Short to power in the front passenger's airbag cutoff indicator |
| B2800-49 | Internal failure of the SRS unit |
| B2801-49 | Internal failure of the SRS unit |
| B2802-49 | Internal failure of the SRS unit |
| B2840-13 | SRS unit connector A not properly installed |
| B2841-13 | SRS unit connector B not properly installed |
| C0061-96 | Internal failure of the SRS unit |
| C0063-96 | Internal failure of the SRS unit |
| U0122-00 | Lost communication with the VSA modulator-control unit (wheel speed sensor signal error) |
| U3000-49 | Internal failure of the SRS unit |
| U3000-51 | SRS unit programming error |
Factory Service Tools
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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.
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