P203A
Reductant Level Sensor Circuit
DTC P203A, sometimes indicated as P203A00 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing reductant level sensor circuit.
This code is set when the reductant level sensor circuit is open or shorted.
The most common cause of this code is a bad reductant level sensor. Other causes can include a bad wiring harness, a bad connector, or a bad computer.
If the code is caused by a bad sensor, the sensor will need to be replaced. If the code is caused by a bad wiring harness, connector, or computer, those parts will need to be replaced.
- P203A: Reductant Level Sensor Circuit
- P203A: Reductant level sensor – circuit malfunction
- P203A 00: Reductant level sensor - circuit malfunction
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- 076115 - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
MERCEDES BENZ: Revision-(warranty information updated) check engine light activated with dtc P2036 (P0410) or P203A-engine performance complaint. *sc - PB076115 - ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
MERCEDES BENZ: Subject regarding check engine light activated with diagnostic trouble code P2036 (P0410) or P203A / engine performance complaint. *jg