Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2009PICKUP F350 SUPER DUTY, 2D PICKUP, 6.8 Y, 4WD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DTC DIAGNOSISDTC P013A: - O2 SENSOR SLOW RESPONSE - RICH TO LEAN (BANK 1, SENSOR 2)
2009 Ford Pickup F350 Super Duty, 2D Pickup, 6.8 Y, 4WD, Standard
DTC P013A: - O2 Sensor Slow Response - Rich To Lean (Bank 1, Sensor 2)
2009 Ford Pickup F350 Super Duty, 2D Pickup, 6.8 Y, 4WD, StandardSECTION DTC P013A: - O2 Sensor Slow Response - Rich To Lean (Bank 1, Sensor 2)
DTC P013A: - O2 SENSOR SLOW RESPONSE - RICH TO LEAN (BANK 1, SENSOR 2)
| Description: | During a deceleration fuel shut-off (DFSO) event, the powertrain control module (PCM) monitors how quickly the rear heated oxygen sensor (HO2S) switches from rich to lean. The measured rate of the rich to lean switch is compared to a calibrated fault threshold value. The threshold value takes into account the level of oxygen in the catalyst, which has an impact on how quickly the rich to lean switch occurs. The test fails when the measured value is slower than the threshold value. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for leaks in the exhaust system. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | - | GO to Pinpoint Test DW . |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.