Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 Intermittent (Generic)
The P4015 code means the vehicle's onboard diagnostic system has detected: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 Intermittent (Generic). This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $120 - $450 (parts and labor)
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Common Symptoms
- Check Engine Light intermittent
- Inconsistent post-DPF temperature readings bank 2
- Sporadic DPF regen failures
- Occasional service messages
Probable Causes (Ranked by Likelihood)
- Loose or corroded bank 2 sensor 2 connector Very High
- Wiring fatigue from vibration near DPF High
- Heat cycle damage to connector Moderate
- Intermittent ground connection Low
Step-by-Step Diagnostic Procedure
-
Wiggle test connector while monitoring live data
-
Inspect connector for heat damage or corrosion
-
Check wiring support brackets near DPF on bank 2
-
Monitor sensor data over multiple drive cycles
Frequently Asked Questions
How do I diagnose an intermittent issue?
Monitor the live data while tapping on the connector and flexing the wiring. If the reading drops out or spikes, you have found the problem area.
Can heat shields prevent sensor issues?
Yes, properly installed heat shields protect wiring from exhaust heat. If a heat shield is missing or damaged, replace it to prevent future sensor failures.
Is P4015 urgent?
Not immediately urgent, but address it within a week. Intermittent faults tend to become permanent faults as the connection degrades further.
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