Reductant Injection Air Pressure Sensor Circuit Intermittent
The P2041 code means the vehicle's onboard diagnostic system has detected: Reductant Injection Air Pressure Sensor Circuit Intermittent. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $600 (parts and labor)
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What Are the Symptoms of P2041?
- Check Engine Light on intermittently
- DEF system warning may come and go
- Occasional power reduction
- SCR efficiency intermittently low
- CEL may clear and return
What Causes P2041? (Most Likely First)
- Loose air pressure sensor connector Very High
- Intermittent wiring fault from vibration High
- Failing air pressure sensor Moderate
- Corroded connector pins making poor contact Moderate
- PCM intermittent input fault Low
Can I Still Drive with P2041?
Short distances only. P2041 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P2041 mean?
P2041 indicates the reductant injection air pressure sensor signal is intermittent, typically from a loose connector or wiring fault that causes the signal to drop in and out.
Can I drive with a P2041 code?
Short-distance driving is acceptable, but the intermittent fault may cause the DEF system to function erratically.
How much does it cost to fix P2041?
Repairs typically cost $200 to $600, often involving connector repair or wiring harness replacement.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P2041?
-
Confirm P2041 and review freeze frame data for intermittent conditions
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Wiggle-test sensor connector and wiring while monitoring signal
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Inspect connector pin tension and cleanliness
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Check wiring routing for chafing against moving parts
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Which Vehicles Commonly Get P2041?
- 2012-2018 BMW 328d 2.0L Diesel
- 2010-2016 Mercedes-Benz ML350 3.0L BlueTEC
- 2014-2020 Ram 3500 6.7L Cummins
- 2011-2017 Ford F-350 6.7L Power Stroke
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