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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID))DTC DIAGNOSISDTC P2626: O2 SENSOR POSITIVE CURRENT TRIM CIRCUIT/OPEN (BANK 1 SENSOR 1)
2010 Mercury Mariner Hybrid, AWD
DTC P2626: O2 Sensor Positive Current Trim Circuit/Open (Bank 1 Sensor 1)
2010 Mercury Mariner Hybrid, AWDSECTION DTC P2626: O2 Sensor Positive Current Trim Circuit/Open (Bank 1 Sensor 1)
WARNING: This page is about a different variant/trim than selected.
DTC P2626: O2 SENSOR POSITIVE CURRENT TRIM CIRCUIT/OPEN (BANK 1 SENSOR 1)
| Description: | During deceleration fuel shut-off (DFSO) the powertrain control module (PCM) monitors the integrity of the universal heated oxygen sensor (HO2S) UO2SPCT circuit by comparing the actual oxygen sensor voltage signal to an expected oxygen sensor voltage signal. The test fails when the actual oxygen sensor voltage exceeds the maximum expected voltage threshold for a specified amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | - | GO to PINPOINT TEST DZ . |
RENDER: 1.0x
NO RELATED
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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.