Question about 2007 Mercedes-Benz C230 Sedan

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Ruff ideal ,no power,was told it could be a cam oxygen sensor or cam cylinoid any ideas?

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Could be cam sensor

Posted on Nov 04, 2013

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Rough idle can be the cam and crank sensor or the timing has shifted from weak timing belt/auto adjuster. also the idle valve on intake is sticking or and fuel pressure valve is not working properly if engine runs fine at speed then the adjuster on timing belt can be the fault, as the pressure on the engine turning the cams is putting the right pressure on the belt. if it is through the hole speed ranged the fuel pressure could be low. if engine goes in to limp mode or takes time to speed up it can be timiming alinment out and or the cam sesor or crank sensor.

Posted on Oct 15, 2013

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0152 coed


P0152 P0152 - O2 Sensor Circuit High Voltage Bank 2 Sensor 1Possible causes - Faulty Front Heated Oxygen Sensor Bank 2
- Intake air leaks may be faulty
- Exhaust gas leaks
- Front Heated Oxygen Sensor Bank 2 harness is open or shorted
- Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
eplacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem
Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- High Fuel Consumption
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Check Engine light with Po131 o2 circuit low voltage sensor 1 bank 1 reading, what does that mean?


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The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

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Harness or connectors (The sensor circuit is open or shorted)
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