P21AB (PCM) - Reductant Level Sensor B Circuit High
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DTC DESCRIPTION P21AB (PCM) - REDUCTANT LEVEL SENSOR B CIRCUIT HIGH
| Description: This DTC sets when the reductant level sensor voltage is greater than or less than a calibrated limit for a calibrated amount of time. | |||
Possible Causes:
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| Diagnostic Aids:
The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center. The reductant level sensor and reductant temperature sensor share a common ground. An open or short to voltage in this ground sets DTCs for both sensors. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RJ . | ||