Results for “P21A”
Fault codes 16
Results match keywords in the stored descriptions. Codes you typed are shown first.
| Code | Description | Brands | System |
|---|---|---|---|
| P21A0 | Cylinder 5 air-fuel ratio imbalance | 18 | Powertrain |
| P21A1 | Cylinder 6 air-fuel ratio imbalance | 18 | Powertrain |
| P21A2 | Cylinder 7 air-fuel ratio imbalance | 14 | Powertrain |
| P21A3 | Cylinder 8 air-fuel ratio imbalance | 14 | Powertrain |
| P21A4 | Cylinder 9 air-fuel ratio imbalance | 6 | Powertrain |
| P21A5 | Cylinder 10 air-fuel ratio imbalance | 6 | Powertrain |
| P21A6 | Cylinder 11 air-fuel ratio imbalance | 6 | Powertrain |
| P21A7 | Cylinder 12 air-fuel ratio imbalance | 6 | Powertrain |
| P21A8 | Reductant level sensor 'B' circuit | 5 | Powertrain |
| P21A9 | Reductant level sensor 'B' circuit range/performance | 11 | Powertrain |
Show 6 more matches on this page
| Code | Description | Brands | System |
|---|---|---|---|
| P21AA | Reductant level sensor 'B' circuit low | 12 | Powertrain |
| P21AB | Reductant level sensor 'B' circuit high | 12 | Powertrain |
| P21AC | Reductant level sensor 'B' circuit intermittent/erratic | 5 | Powertrain |
| P21AD | Reductant level sensor 'C' circuit | 5 | Powertrain |
| P21AE | Reductant level sensor 'C' circuit range/performance | 5 | Powertrain |
| P21AF | Reductant level sensor 'C' circuit low | 11 | Powertrain |
| Code | Description | Brands | System |
|---|---|---|---|
| P21AA | Reductant level sensor 'B' circuit low | 12 | Powertrain |
| P21AB | Reductant level sensor 'B' circuit high | 12 | Powertrain |
| P21AC | Reductant level sensor 'B' circuit intermittent/erratic | 5 | Powertrain |
| P21AD | Reductant level sensor 'C' circuit | 5 | Powertrain |
| P21AE | Reductant level sensor 'C' circuit range/performance | 5 | Powertrain |
| P21AF | Reductant level sensor 'C' circuit low | 11 | 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.