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P0172, p1128, p1255 - Beetle Volkswagen Cars & Trucks

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Posted on Jan 02, 2017

localwonder
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SOURCE: 2.0 engne - errors codes p0134, p0172, p1128. What is the problem and how od i fix it?

Trouble Code: P0134


HO2S (Bank 1 Sensor 1) Circuit No Activity

Possible Causes:


Leaks present in the exhaust manifold or exhaust pipes

HO2S signal wire and ground wire crossed in connector (voltage jumps)

HO2S element is fuel contaminated or has failed

ECM has failed



Trouble Code: P0172


Fuel System Too Rich (Cylinder Bank 1)

Possible Causes:


Camshaft timing is incorrect, or the engine has an oil overfill condition

EVAP vapor recovery system failure (may be pulling vacuum)

Fuel pressure regulator is damaged or leaking

HO2S element is contaminated with alcohol or water

MAF or MAP sensor values are incorrect or out-of-range

One of more fuel injectors is leaking



Trouble Code: P1128


Long Term Fuel Trim Add. Air. Bank 1 System Too Lean

Possible Causes:


Fuel pressure is too low or fuel quantity supplied is too low

Fuel filter faulty

Transfer fuel pump has failed

Fuel injector is faulty (sticking or not opening)

Engine speed (RPM) sensor is faulty

MAF sensor circuit open

MAF sensor circuit shorted to ground

Air leak in the manifold

Secondary air injection system combi-valve stuck open

Secondary air injection system electrical short

ECM has failed

Posted on May 24, 2009

  • 218 Answers

SOURCE: Trouble codes P0172 and P1128 - VW Beetle

The code P0172 means...system too rich(cyclinder bank No.1)..and all of the OBDII fault codes begin with a "P0"..i dont know what a P1128 is....i hope this will help you

Posted on Jun 28, 2009

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1 Answer

CODES P0300, P1128


po300 is random miss fire doubtful two O2 sensors bad at one time most likely coolant temp sensor is bad causing engine to run rich this will cause O2 sensors to throw a code(thats what they are there for..exhaust gas temp. and raw fuel) running rich will also fowl spark plugs(=miss fire) P1128 ??

Mar 20, 2013 | 2006 Jeep Liberty

1 Answer

P1128 and c2000


p1128 = upstream heated o2 sensors swapped

c2000 = unknown. perhaps some further detials and or a question could help me "read your car's mind" ? OR otherwise,. when you put the right part in the right place, the c2000 may even go away?!?!?!??

Best regards
Ck

Jul 17, 2012 | 2007 Hyundai Atos Prime

1 Answer

Engine management light on-P1128 Manufacturing control


No such code listed (P1128) for 2002 Accent

Aug 29, 2011 | 2002 Hyundai Accent

1 Answer

Problema p1128


try by first cleaning the maf sensor. p1128 is a system to lean bank 1, checking the 02 sensors, vacuum leaks can cause this code also. check and or clean mass air flow sensor.

Aug 17, 2010 | Volkswagen Passat Cars & Trucks

1 Answer

Trouble code 1997 Hyundai Elantra, P1128


P1128 trouble code is for (Upstream Heated O2 Sensors Swapped). Did you switch around any of the O2 sensors?

Apr 24, 2010 | 1997 Hyundai Elantra

1 Answer

1998 vw beetle codes p0411 and p1128


P0411 Secondary Air Injection System Incorrect Flow Detected
The 4mm inside diameter vaccuum hose gets pinched between the lower intake manifold and the secondary air pump housing, flattening it over time.
Here's a link to the steps to fix yourself if you are mechanically inclined...
http://forums.vwvortex.com/zerothread?id=1995162

P1128 Long Term Fuel Trim Is Too Lean
It is very likely this code is coming up because of the vacuum hose as well.

Oct 20, 2009 | 1998 Volkswagen Beetle

4 Answers

Trouble codes P0172 and P1128 - VW Beetle


The code P0172 means...system too rich(cyclinder bank No.1)..and all of the OBDII fault codes begin with a "P0"..i dont know what a P1128 is....i hope this will help you

Jun 28, 2009 | 2000 Volkswagen Beetle

1 Answer

P1128 code


I looked on alldata, and my Chrysler site, and there is no P1128 code listed. Are you sure the code is correct? What motor is in it? I looked for the code online for generic reasons, and it says it is for upstream heated O2 sensors swapped. Never heard of this code ever in 14 years of service work.

May 28, 2009 | 2006 Chrysler Sebring

1 Answer

2.0 engne - errors codes p0134, p0172, p1128. What is the problem and how od i fix it?


Trouble Code: P0134


HO2S (Bank 1 Sensor 1) Circuit No Activity

Possible Causes:


Leaks present in the exhaust manifold or exhaust pipes

HO2S signal wire and ground wire crossed in connector (voltage jumps)

HO2S element is fuel contaminated or has failed

ECM has failed



Trouble Code: P0172


Fuel System Too Rich (Cylinder Bank 1)

Possible Causes:


Camshaft timing is incorrect, or the engine has an oil overfill condition

EVAP vapor recovery system failure (may be pulling vacuum)

Fuel pressure regulator is damaged or leaking

HO2S element is contaminated with alcohol or water

MAF or MAP sensor values are incorrect or out-of-range

One of more fuel injectors is leaking



Trouble Code: P1128


Long Term Fuel Trim Add. Air. Bank 1 System Too Lean

Possible Causes:


Fuel pressure is too low or fuel quantity supplied is too low

Fuel filter faulty

Transfer fuel pump has failed

Fuel injector is faulty (sticking or not opening)

Engine speed (RPM) sensor is faulty

MAF sensor circuit open

MAF sensor circuit shorted to ground

Air leak in the manifold

Secondary air injection system combi-valve stuck open

Secondary air injection system electrical short

ECM has failed

May 24, 2009 | 2000 Volkswagen Beetle

1 Answer

Code po171 car running too lean...


DTC P0171: Fuel System Too Lean

NOTE: If some of the DTCs listed below are stored at the sametime as DTC P0171 and/or P0172, troubleshoot those DTCs first, thenrecheck for P0171 and/or P0172.

P0107, P0108, P1128, P1129: Manifold Absolute Pressure (MAP) Sensor
P0135: Primary Heated Oxygen Sensor (primary HO2S) (Sensor 1) Heater
P0137, P0138: Secondary HO2S (Sensor 2)
P0141: Secondary HO2S (Sensor 2) Heater
P1259: VTEC System

  1. Check the fuel pressure. Is fuel pressure OK? YES - Go to step 2. NO - Check these items:
    • If the pressure is too high. Check the fuel pressure regulator, and the fuel return pipe.
    • If the pressure is too low. Check the fuel pump, the fuel feed pipe, the fuel filter, and the fuel pressure regulator.
  1. Start the engine. Hold the engine at 3,000 rpm with no load (in neutral) until the radiator fan comes on.
  2. Check the primary HO2S (Sensor 1) output with the scan tool. Does it stay less than 0.3 V or more than 0.6 V ? YES - Replace the primary HO2S (Sensor 1). NO - Go to step 4.
  3. Turn the ignition switch OFF.
  4. With a vacuum pump, apply vacuum to the EVAP canister purge valve from the intake manifold side. Does it hold vacuum? YES - Check the valve clearances and adjust if necessary. If the valve clearances are OK, replace the fuel injectors. NO - Replace the EVAP canister purge valve.

Apr 12, 2009 | 2002 Honda S2000

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