bobbyz

I did replace the O2 (Bank 1 Sensor 1) but the car still has rough idle and shakes even more when I turn the AC on.
I did scan for code and I am getting P0173, P0170, and P0130 (pending). The scanner cannot clear the codes and it kept saying: Command sent 3 codes remain.
Before changing the O2 I did:
clean MAF (no go)
Replaced the MAF insert (no go)
Note: I bought the MAF insert from ebay which I think is generic one since it does not indicate the Bosch brand.
What do you guys think? Any Help?

sick430

im having the same codes. please help us.

DropTop208

Im pretty sure that P0170 and P0173 are fuel adaptaion codes for bank 1 and bank 2. If thats the case, you either have a large vacuum leak, or a bad MAF sensor.

bobbyz

Thanks for reply

Is there a vacuum diagram for this car that I can use? If I don’t find the vacuum leak I guess I will replace the MAF sensor again (this time with an original one)

Update:
I just changed the 2 motor mounts and the transmission mount. Rough idle is gone and the car does not shake anymore. P0173 and P0170 codes are still there.

430cruz

Check for a vacuum leak at the PCV line coming off (on the 430 engine in my case) valve cover leading back to MAF sensor.

here's the "P" series codes in the area of OBDII your in.

P0100 Mass or Volume Air Flow Circuit Malfunction
P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
P0102 Mass or Volume Air Flow Circuit Low Input
P0103 Mass or Volume Air Flow Circuit High Input
P0104 Mass or Volume Air Flow Circuit Intermittent
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
P0110 Intake Air Temperature Circuit Malfunction
P0111 Intake Air Temperature Circuit Range/Performance Problem
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0114 Intake Air Temperature Circuit Intermittent
P0115 Engine Coolant Temperature Circuit Malfunction
P0116 Engine Coolant Temperature Circuit Range/Performance Problem
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0119 Engine Coolant Temperature Circuit Intermittent
P0120 Throttle/Pedal Position Sensor/Switch A Circuit Malfunction
P0120 ETS MainThrottle Position Sensor Malfunction (Hyundai)
P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input
P0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input
P0124 Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
P0126 Insufficient Coolant Temperature for Stable Operation
P0128 Range/Performance Problem In Thermostat(Acura)
P0128 ECT Below Thermostat Regulating Temperature(GM)
P0130 O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0142 O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
P0143 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P0144 O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0145 O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
P0146 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
P0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0150 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
P0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
P0162 O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
P0163 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164 O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
P0165 O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3
P0167 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System too Lean (Bank 2)
P0175 System too Rich (Bank 2)
P0176 Fuel Composition Sensor Circuit Malfunction
P0177 Fuel Composition Sensor Circuit Range/Performance
P0178 Fuel Composition Sensor Circuit Low Input
P0179 Fuel Composition Sensor Circuit High Input
P0180 Fuel Temperature Sensor A Circuit Malfunction
P0181 Fuel Temperature Sensor A Circuit Range/Performance
P0182 Fuel Temperature Sensor A Circuit Low Input
P0183 Fuel Temperature Sensor A Circuit High Input
P0184 Fuel Temperature Sensor A Circuit Intermittent
P0185 Fuel Temperature Sensor B Circuit Malfunction
P0186 Fuel Temperature Sensor B Circuit Range/Performance
P0187 Fuel Temperature Sensor B Circuit Low Input
P0188 Fuel Temperature Sensor B Circuit High Input
P0189 Fuel Temperature Sensor B Circuit Intermittent
P0190 Fuel Rail Pressure Sensor Circuit Malfunction
P0191 Fuel Rail Pressure Sensor Circuit Range/Performance
P0192 Fuel Rail Pressure Sensor Circuit Low Input
P0193 Fuel Rail Pressure Sensor Circuit High Input
P0194 Fuel Rail Pressure Sensor Circuit Intermittent
P0195 Engine Oil Temperature Sensor Malfunction
P0196 Engine Oil Temperature Sensor Range/Performance
P0197 Engine Oil Temperature Sensor Low
P0198 Engine Oil Temperature Sensor High
P0199 Engine Oil Temperature Sensor Intermittent

bobbyz

i dont see any vacuum leak.
430cruz, what is pcv line? i dont see any vacuum tube going to maf sensor.
btw, i did check the egr tube and that was clear.
i just want to rule out other (less expensive) things before ordering a new maf.
i may just change some of the older vacuum tubes coming out of egr valve. do you guys know where i could buy these tubes? local autopart shops maybe?

thanks

430cruz

PCV = Positive Crankcase Ventilation

I'm not sure about the 320 motor, but on the 430 motor if you look just under the fuel injector harness (black plastic piece) running up the drivers side (assuming you drive a U.S. model) there will be a rubber vacuum line that starts at a metal port on the intake side of the drivers side valve cover. This line runs under the fuel injector rail and around the back of the intake manifold. I've seen several of these rubber lines rot and split at the metal port.

https://mbworld.org/forums/clk-class-w208/212228-mythbusters-dyno-run-w-430-different-intakes.html

Look at post #6 for a picture of the black plastic piece I'm referring to.
Again, this is a 430 engine. It may be different on your 320

benzover

Just because you can't "see" a vac leak doesn't mean you don't have one. Spray carb cleaner on vac lines, if rpm goes up you have a leak.

bobbyz

thanks 430cruz. ill check it out.
thanks benzover. ill try that.

bobbyz

no vacuum leak at PCV line. I sprayed carburetor cleaner on PCV line, all the tubes on egr valve and around it, and no change on rpm.
any other suggestion?

benzover

sure seems like a bum MAF sensor

430cruz

I'd lean towards an OEM Mass Air Sensor.

myNAMESterry

i'm also receiving p0130 and p0135



where is bank 1 sensor 1 located?????

bobbyz

thats my next move. to change the maf.
ill post the result.

430cruz

So you have a good source for an OEM sensor?

bobbyz

One more thing that may or may not be related to this problem.
When I start the car, I see that the fuel gauge is lower than when I stop the car few hours earlier. So it seems like there is fuel loss when the car is not on. Is that even possible where there is no smell of gas?

bobbyz

autohaus arizona has it for $206

430cruz

Are you parked on a level or a slight incline?
My driveway has a slight incline and if I park out there the same thing happens. Does not occur if parked in the garage.

bobbyz

the parking is level.

benzover

Fuel gauge is not exact, hence different reading, unless you do have a fuel system leak, which would explain vac. leak. Need to get under car. Front of car covered by shroud(easy to remove). Before you start car open hood and to see if you can tell where gas smell is coming from. If from exhaust could be(remember could be), a injector is bleeding down. The fuel pump also has a shroud cover, could be (again remember,could be) rubber hoses that are on filter,fuel pumps.


"Test,don't Guess"

bobbyz

as i said earlier there is no smell of gas.

jbowen1094

Until reading these posts. I checked for the vacuum leaks as described. The tube leading from the valve cover to the maf was not the culprit. The housing the tube goes into on the valve cover was loose!!! Tightened it down, started the car up and the CEL was gone!!

jbowen1094

CHecked for vacuum leaks and the car runs fine.. Returning the one I bought on ebay.. You can tell the difference between the two if you look close enough

poptopclk

--------------------------------------------------------------------------------

I had this same code & when Autozone put their diag computer on it showed this same error.

They don't have exact readouts for Benz, but it pointed towards air intake systems.

I THOUGHT WHAT THE HELL IT'S BEEN 40,000 SINCE I REPLACED THE AIR FILTER so I did for $22.00

Engine started and the CEL light WAS OFF and stayed off Hooray!!!

Sometimes it is the simplest thing