Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 High (Generic)
The P4014 code means the vehicle's onboard diagnostic system has detected: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 High (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 on
- Falsely high post-DPF temperature on bank 2
- Unnecessary DPF cooling cycles
- Poor fuel economy from excessive regen management
Probable Causes (Ranked by Likelihood)
- Short to voltage in sensor 2 bank 2 circuit Very High
- EGT sensor 2 bank 2 internal failure High
- Damaged wiring contacting power wire Moderate
- PCM input circuit fault Low
Step-by-Step Diagnostic Procedure
-
Check signal voltage at sensor connector with key on engine off
-
Disconnect sensor and check for voltage on signal wire
-
Inspect wiring for chafe points near power sources
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Test sensor resistance and compare to specifications
Frequently Asked Questions
What is the normal post-DPF temperature range?
During normal driving, post-DPF temperatures typically range from 300-600 degrees F. During active regeneration, temperatures can exceed 1000 degrees F.
Can P4014 trigger unnecessary regeneration?
Yes, if the PCM reads falsely high temperatures, it may adjust its regeneration strategy, potentially causing more frequent or poorly timed regen events.
How do I prevent EGT sensor failures?
Use quality replacement sensors, ensure proper wiring routing away from hot surfaces, and address any exhaust leaks that could cause excessive heat exposure.
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