Results for “P21C”
Fault codes 16
Results match keywords in the stored descriptions. Codes you typed are shown first.
| Code | Description | Brands | System |
|---|---|---|---|
| P21C0 | Cold start cylinder 11 injection timing | 5 | Powertrain |
| P21C1 | Cold start cylinder 12 injection timing | 5 | Powertrain |
| P21C2 | Reductant heater relay control circuit/open | 5 | Powertrain |
| P21C3 | Reductant heater relay control circuit low | 5 | Powertrain |
| P21C4 | Reductant heater relay control circuit high | 5 | Powertrain |
| P21C5 | Reductant level sensor 'A' stuck | 14 | Powertrain |
| P21C6 | Reductant level sensor 'B' stuck | 11 | Powertrain |
| P21C7 | Reductant control module power relay/relays control circuit/open | 7 | Powertrain |
| P21C8 | Reductant control module power relay/relays control circuit low | 7 | Powertrain |
| P21C9 | Reductant control module power relay/relays control circuit high | 8 | Powertrain |
Show 6 more matches on this page
| Code | Description | Brands | System |
|---|---|---|---|
| P21CA | Reductant control module supply voltage circuit | 6 | Powertrain |
| P21CB | Reductant control module supply voltage low | 16 | Powertrain |
| P21CC | Reductant control module supply voltage high | 18 | Powertrain |
| P21CD | Reductant quality module supply voltage low | 5 | Powertrain |
| P21CE | Reductant quality module performance | 7 | Powertrain |
| P21CF | Cylinder 1 injector 'B' circuit/open | 19 | Powertrain |
| Code | Description | Brands | System |
|---|---|---|---|
| P21CA | Reductant control module supply voltage circuit | 6 | Powertrain |
| P21CB | Reductant control module supply voltage low | 16 | Powertrain |
| P21CC | Reductant control module supply voltage high | 18 | Powertrain |
| P21CD | Reductant quality module supply voltage low | 5 | Powertrain |
| P21CE | Reductant quality module performance | 7 | Powertrain |
| P21CF | Cylinder 1 injector 'B' circuit/open | 19 | 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.