Reductant Injection Air Pressure Sensor ‘A’ Circuit Intermittent
Table of contents
P2041 MERCEDES-BENZ Possible Causes
- Faulty Reductant Injection Air Pressure Sensor
- Reductant Injection Air Pressure Sensor harness is open or shorted
- Reductant Injection Air Pressure Sensor circuit poor electrical connection
- Faulty Reductant Pump Assembly
How do I fix code P2041 MERCEDES-BENZ?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2041 MERCEDES-BENZ code
The cost of diagnosing the P2041 MERCEDES-BENZ code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2041 MERCEDES-BENZ Description
The reductant system uses a selective reduction catalyst to improve exhaust emissions and fuel efficiency by injecting a reductant into the exhaust system. The reductant also referred to as diesel exhaust fluid is a 32.5% solution of urea in deionized water. The reductant system reduces Nitrogen Oxides (NOx) present in the exhaust stream to nitrogen and water.
The Reductant Injection Air Pressure Sensor sends voltage reading information to the Powertrain Control Module (PCM). The PCM interprets these readings as pressure or exhaust gas temperature. The code is set when the voltage sent from the sensor to the PCM is out of factory specifications.