Results for “P21B”
Fault codes 16
Results match keywords in the stored descriptions. Codes you typed are shown first.
| Code | Description | Brands | System |
|---|---|---|---|
| P21B0 | Reductant level sensor 'C' circuit high | 11 | Powertrain |
| P21B1 | Reductant level sensor 'C' circuit intermittent/erratic | 5 | Powertrain |
| P21B2 | Excessive time to enter closed loop NOx absorber control | 6 | Powertrain |
| P21B3 | Closed loop NOx absorber control at limit - too high | 5 | Powertrain |
| P21B4 | NOx absorber - overtemperature bank 1 | 5 | Powertrain |
| P21B5 | NOx absorber - overtemperature bank 2 | 5 | Powertrain |
| P21B6 | Cold start cylinder 1 injection timing | 5 | Powertrain |
| P21B7 | Cold start cylinder 2 injection timing | 5 | Powertrain |
| P21B8 | Cold start cylinder 3 injection timing | 5 | Powertrain |
| P21B9 | Cold start cylinder 4 injection timing | 5 | Powertrain |
Show 6 more matches on this page
| Code | Description | Brands | System |
|---|---|---|---|
| P21BA | Cold start cylinder 5 injection timing | 5 | Powertrain |
| P21BB | Cold start cylinder 6 injection timing | 5 | Powertrain |
| P21BC | Cold start cylinder 7 injection timing | 5 | Powertrain |
| P21BD | Cold start cylinder 8 injection timing | 5 | Powertrain |
| P21BE | Cold start cylinder 9 injection timing | 5 | Powertrain |
| P21BF | Cold start cylinder 10 injection timing | 5 | Powertrain |
| Code | Description | Brands | System |
|---|---|---|---|
| P21BA | Cold start cylinder 5 injection timing | 5 | Powertrain |
| P21BB | Cold start cylinder 6 injection timing | 5 | Powertrain |
| P21BC | Cold start cylinder 7 injection timing | 5 | Powertrain |
| P21BD | Cold start cylinder 8 injection timing | 5 | Powertrain |
| P21BE | Cold start cylinder 9 injection timing | 5 | Powertrain |
| P21BF | Cold start cylinder 10 injection timing | 5 | Powertrain |
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These tables come from diagnostic data. They are useful for advanced users and can be ignored for a normal code lookup.