Trouble codes - Mercedes-Benz Forum
 
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#1 (permalink) Old 04-05-2006, 06:57 PM
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Trouble codes

P0130 o2 sensor ciruit malfunction Bank 1 Sensor 1

P0135 o2 sensor circuit malfunction Bank 1 sensor 1

P0301 Cylinder 1 misfire detected

P0304 cylinder 4 misfire detected

P0303 cylinder 3 misfire detected

P0300 Multiple clinder misfire detected

My check engine light come on intermitently so I bought one of those code check devices and the results are above. The light is not currently on.

Do I need a new rotor and cap? New spark plugs?

Do I need a new O2 sensor? Where is it?

My first attempt at this so all help appreciated.

DM



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#2 (permalink) Old 04-05-2006, 10:11 PM
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RE: Trouble codes

Quote:
dm567 - 4/5/2006 5:57 PM

P0130 o2 sensor ciruit malfunction Bank 1 Sensor 1

P0135 o2 sensor circuit malfunction Bank 1 sensor 1

P0301 Cylinder 1 misfire detected

P0304 cylinder 4 misfire detected

P0303 cylinder 3 misfire detected

P0300 Multiple clinder misfire detected
What year, model is your MB? How many miles? Those codes indicate coil or wiring problems. Could also be spark plugs. Need more info. Feel free to PM my mailbox.
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#3 (permalink) Old 04-05-2006, 11:39 PM
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RE: Trouble codes

Its a 2000 s500 with only 12K miles on it. It sat in my father's garage for years.

Two issues in my opinion:

1. since its not always the same cyliner missing could it be the rotor and rotor cap?

2. O2 sensor may need replacing but I'd like some help in locating which one if ther are four on this car.

Dom


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#4 (permalink) Old 04-06-2006, 09:18 AM
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RE: Trouble codes

I already answered you via PM, but this is good general info for the forum. Your car has a crank position sensor, linked to a computer that sends a "fire" sgnal to eight individual coils, one on each cylinder. No rotor, distributor cap, points, ect. Your S500 has two 02 sensors, each located on the lt/rt manifold pipes.

Cars that sit for extended periods develop three problems that can be easily remedied:
1. oil goes bad, water condenses ito it.
2. fuel goes bad, water condenses into it and octane levels drop.
3 fuel injectors can stick either open or closed.

For a car that has sat for months, drain and change the oil, drain and refill the fuel tank and add a dryer to the new fuel. The worst part is when the engine first starts, no oil film on the bearing surfaces. If you can, disable the crank sensor pickup (not for the novice), then the engine will only crank via the starter, pump oil through out the engine.

As for the injectors, buy a fuel additive and use it for the first three or four tank fulls.
O2 sensors don't fail that often, and when they do it doesn't really effect the performance of the engine, especially missing. You might run a bit lean is all, and have the "check engine" lamp on.

By the way .. if the battery is dead, never, ever use a booster. Trickle charge it at best and if over 8 hours the car won't start, get a new battery. Boost voltage can be as high as 18 volts, can really fry some unprotected systems such as the starter.
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