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  1. #1
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    "p0151 O2 Circuit low voltage Bank 2, Sensor1"

    Anyone ever pull this code? Any ideas on what causes it?
    Quote Originally Posted by JusticePete
    Even bad pub is good for business.
    Quote Originally Posted by JusticePete
    In my years of business I have found that there are three truths: the customer's truth, the busness owner's truth and the truth that lies some where in the middle. No additional commentary is required nor would it would serve no purpose.
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    SRT MAX 112 LSA | Inertia Bg Valve heads | SLP Longtubes | Gutted Cats | SLP LM1 | AFE Stage II | 90mm TB | 25% Underdrive pulley | Mopar TCM | Pro Torque 2800 | Getrag LSD | Inertia CMR tuned | Pedder Track II | 402 rwhp 406 rwtq12.3 @ 112



  2. #2
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    P0151-O2 SENSOR 2/1 CIRCUIT LOW
    LX ENGINE ELECTRICAL DIAGNOSTICS 9 - 153
    When Monitored:
    Engine running for less than 30 seconds and the O2 Sensor Heater Temperature is less than 251C (484F)
    with battery voltage greater 10.99 volts.
    Set Condition:
    The oxygen sensor signal voltage is below 1.5 volts for 3 seconds after starting engine. One Trip Fault. Three good trips to turn off the MIL.
    Possible Causes
    (K902) O2 UPSTREAM RETURN CIRCUIT SHORTED TO GROUND
    (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO GROUND
    (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO (K902) O2 UPSTREAM RETURN CIRCUIT
    (K43) O2 2/1 SIGNAL SHORTED TO THE (Z904) HEATER GROUND CIRCUIT
    O2 SENSOR
    PCM
    6.1L Hemi Registry # 00801

    JESUS CHRIST is my President!


  3. #3
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    do you have a diablo if so talk to Mike he may know what that is.

  4. #4
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    Diagnostic Test
    1. O2 SENSOR BELOW 1.5 VOLTS
    Start the engine.
    Allow the engine to reach normal operating temperature.
    With a scan tool, read the 2/1 O2 Sensor voltage.
    Is the voltage below 1.5 volts?
    Yes >> Go To 2
    No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    2. (K43) O2 2/1 SIGNAL CIRCUIT
    Turn the ignition off.
    Disconnect the 2/1 O2 Sensor harness connector.
    Ignition on, engine not running.
    With a scan tool, monitor the 2/1 O2 Sensor voltage.
    Is the O2 Sensor voltage above 4.8 volts?
    Yes >> Go To 3
    No >> Go To 5
    3. O2 SENSOR
    Measure the voltage on the (K902) O2 Upstream Return circuit in the O2 Sensor harness connector.
    Is the voltage at 2.5 volts?
    Yes >> Replace the 2/1 O2 Sensor.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    No >> Go To 4
    4. (K902) O2 UPSTREAM RETURN CIRCUIT SHORTED TO GROUND
    Turn the ignition off.
    Disconnect the PCM harness connectors.
    Measure the resistance between ground and the (K902) O2 Upstream
    Return circuit in the O2 Sensor harness connector.
    Is the resistance below 100 ohms?
    Yes >> Repair the short to ground in the (K902) O2 Upstream
    Return circuit.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    No >> Go To 8
    5. (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO GROUND
    Turn the ignition off.
    Disconnect the PCM harness connectors.
    Measure the resistance between ground and the (K43) O2 2/1 Signal circuit in the O2 Sensor harness connector.
    Is the resistance below 100 ohms?
    Yes >> Repair the short to ground in the (K43) O2 2/1 Signal circuit.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    No >> Go To 6
    LX ENGINE ELECTRICAL DIAGNOSTICS 9 - 155
    6. (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO (K902) O2 UPSTREAM RETURN CIRCUIT
    Measure the resistance between the (K43) O2 2/1 Signal circuit and the
    (K902) O2 Upstream Return circuit in the O2 Sensor harness connector.
    Is the resistance below 100 ohms?
    Yes >> Repair the short between the (K902) O2 Upstream Return circuit and the (K43) O2 2/1 Signal circuit.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    No >> Go To 7
    7. (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO (Z904) HEATER GROUND CIRCUIT
    Measure the resistance between the (K43) O2 2/1 Signal circuit and the
    (Z904) O2 Heater ground circuit in the O2 Sensor harness connector.
    Is the resistance below 100 ohms?
    Yes >> Repair the short between the (Z904) O2 Heater ground circuit and the (K43) O2 2/1 Signal circuit.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    No >> Go To 8
    8. PCM
    NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal
    push out. Repair as necessary.
    Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.
    Were there any problems found?
    Yes >> Repair as necessary.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
    No >> Replace and program the Powertrain Control Module per Service Information.
    Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

  5. #5
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    Quote Originally Posted by Bornagainultimatum View Post
    P0151-O2 SENSOR 2/1 CIRCUIT LOW
    LX ENGINE ELECTRICAL DIAGNOSTICS 9 - 153
    When Monitored:
    Engine running for less than 30 seconds and the O2 Sensor Heater Temperature is less than 251C (484F)
    Well I did notice it right after I took my car to the car wash. They were turning my car off and on a lot moving it up in line, could that have caused it?

  6. #6
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    .

    TSB 08-034-05

    SUBJECT:
    MIL Illumination, DTC's P0037, P0058, P0131, P0132, P0133, P0138, P0151, P0153,
    P0159
    OVERVIEW:
    This bulletin involves repositioning the upstream Oxygen (O2) sensor connectors and
    replacing the wiring harness connector(s) and O2 sensor(s) as necessary.
    MODELS:
    2005 - 2006 (LX) 300/Magnum/Charger
    NOTE: This bulletin applies to vehicles equipped with a 2.7L, 3.5L or 5.7L engine
    (sales code EER, EGG or EZB).
    SYMPTOM/CONDITION:
    MIL Illumination due to one or more of the following DTC's:

    P0037-O2 SENSOR 1/2 HEATER CIRCUIT LOW

    P0058-O2 SENSOR 2/2 HEATER CIRCUIT HIGH

    P0131-O2 SENSOR 1/1 CIRCUIT LOW

    P0132-O2 SENSOR 1/1 CIRCUIT HIGH

    P0133-O2 SENSOR 1/1 SLOW RESPONSE

    P0138-O2 SENSOR 1/2 CIRCUIT HIGH

    P0151-O2 SENSOR 2/1 CIRCUIT LOW

    P0153-O2 SENSOR 2/1 SLOW RESPONSE

    P0159-O2 SENSOR 2/2 SLOW RESPONSE

    The condition may be due to the cowl drain flowing water onto the connectors for the O2 sensor(s) at the center rear area of the engine. This leads to water intrusion into the wiring harness connector(s) which may lead to terminal corrosion and/or MIL illumination.



    DIAGNOSIS:



    NOTE: If the vehicle is equipped with a 5.7L engine (sales code EZB) and was built

    on or before August 18, 2004 (MDH 0818XX), perform Service Bulletin
    18-031-04 REV A as necessary before continuing with diagnosis. For 2.7L
    and 3.5L engines continue with the diagnosis.
    1. Open the hood

    bank one is on the drivers side and bank two is on the passenger side



    2. Disconnect the O2 Sensor connectors and check for water intrusion and/or corrosion in both upstream O2 sensor connectors at the center rear area of the engine.

    a. If no water or corrosion is present, reposition the wiring harness connectors to the
    outboard edge of the valve cover away from the center of the engine. Tie strap the
    harnesses in place. If no water or corrosion was present, further diagnosis is
    required. This bulletin does not apply.
    b. If water is present but no corrosion, blow out the connector(s) and reposition the
    wiring harness to the outboard edge of the valve cover away from the center of the
    engine. Tie strap the harness in place.
    c. If corrosion is present, perform the Repair Procedure.
    PARTS REQUIRED:
    Qty. Part No. Description
    AR (2) 05161925AA Wiring, 4 way
    AR (2) 56029049AA Sensor, Oxygen (2.7 & 3.5L engines)
    AR(2) 56028994AB Sensor, Oxygen (5.7L engine)
    SPECIAL TOOLS/EQUIPMENT REQUIRED:
    05019912AA Mopar Wire Crimping Tool (or equivalent)
    NPN Oxygen Sensor Socket (Snap-On YA8875 or equivalent)
    REPAIR PROCEDURE:
    2.7L and 3.5L Engines Replace O2 Sensor and Wiring Harness Connector
    1. Remove the appropriate O2 sensor. Refer to the detailed removal procedures
    available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Injection, O2
    Sensor, Removal.
    NOTE: It may be necessary to disconnect the purge vacuum harness to gain better
    access to the harness connectors.
    2. Replace the wiring harness connector, using kit p/n 05161925AA. Refer to the detailed
    removal procedures available in TechCONNECT, under: Service Info, 8 - Electrical,
    Wiring Diagram Information, Wire, Standard Procedures, Wire Splicing.
    3. Install the new O2 sensor using the appropriate part number. Refer to the detailed
    removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel
    System, Fuel Injection, O2 Sensor, Installation.
    4. Reposition the wiring harness connectors to the outboard edge of the valve cover
    away from the center of the engine. Tie strap the harnesses in place.
    5.7L Engine Replace O2 Sensor and Wiring Harness Connector
    1. Release Fuel Pressure. Refer to the detailed removal procedures available in
    TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Delivery, Standard
    Procedure - Fuel Pressure Release.
    WARNING:THE FUEL SYSTEM IS UNDER CONSTANT PRESSURE EVEN WITH
    ENGINE OFF. BEFORE SERVICING FUEL RAIL, FUEL SYSTEM
    PRESSURE MUST BE RELEASED.
    2. Disconnect the negative battery cable.
    08-034-05 -2-
    3. Remove the intake manifold. Refer to the detailed removal procedures available in
    TechCONNECT, under: Engine, Manifolds, Manifold - Intake, Removal.
    4. Remove the 3 engine harness retaining clips from the engine harness bracket.
    5. Disconnect and remove the appropriate O2 sensor. Refer to the detailed removal
    procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel
    Injection, O2 Sensor, Removal.
    6. Pull the lower harness up to access the O2 harness connectors.
    7. Replace the wiring harness connector, using kit p/n 05161925AA. Refer to the detailed
    removal procedures available in TechCONNECT, under: Service Info, 8 - Electrical,
    Wiring Diagram Information, Wire, Standard Procedures, Wire Splicing.
    8. Install the new O2 sensor using the appropriate part number. Refer to the detailed
    removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel
    System, Fuel Injection, O2 Sensor, Installation.
    9. Reposition the wiring harness connectors to the outboard edge of the valve cover
    away from the center of the engine. Tie strap the harnesses in place.
    Last edited by klarmie; 03-01-2008 at 10:32 AM.
    5.7L Hemi Registry # 00814

  7. #7
    Join Date
    Aug 2013
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    I just had this code and a couple others pop up on my 2008 Dodge Charger SRT8.
    I have had SLP long tube headers and HF cats but would only get P0420 and P0430 on occasion. I would just reset and go.
    Yesterday I was driving home in an Ice storm where it rained ice and there was 2-5" of SLUSH all over on the ground and could hear it constantly spraying underneath the car.
    The codes I recieved were:P0133, P0172, P0151, P0131 and the P0420 and P0430.
    I reset with my predator and on my way home again I recieved P0151 and P0131 i believe.
    What do I have going on here?
    I drove around for 3 months with a huge leak before the cats because the clamps would not seal and never got these. I bought a Corsa Cat-Back and had EVERYTHING welded together to ensure no leaks a few weeks ago and had no CEL until i drove in the cold and slush.

    Any ideas?
    08 Charger Srt8- debadged, TorRed, 35% tint, Danko 68' style grille in black, P-1SC-1, Corsa cat back, SLP ceramic coated long tube headers with HF cats, Tooned, 180 degree t-stat, Stack Performance Phenolic spacers, BWoody end links, to be continued.....

    Best 1/8 mile @ Eddyville 8.39@88.79 N/A
    Best 1/4 mile @ Cedar Falls 13.10@108.44 N/A

  8. #8
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    Slush spraying up, id get under and check for anything got disconnected. The moisture can work into the connectors and cause a short also.

    Sent from my SCH-I405 using Tapatalk 2
    2008 Magnum BB R/T Hemi Registry # 1584 PPP Stage 2 Cam, JBA Shorty Headers, JBA High Flow cats, Heartthrob Exhaust, Eagle Intake, LMI Intake, MTCM, Blue Tops, ProTorque Converter, SRT Rear, Techo Strut Brace, lowered, Tuned by Diablotoona SOLD--2005 Mineral Gray AWD Hemi Registry # 1154

    Quote Originally Posted by Hemissary View Post
    For the work being performed, length is far more important than diameter :^)

  9. #9
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    I had this problem on my SRT8 Challenger and the dealer replaced the o2 sensors. Problem fixed

  10. #10
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    Well after resetting all I am gettin is P0131.
    I have checked wires and all seems fine. Nothing unplugged...
    guess I need 02 sensor?

  11. #11
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    Aug 2013
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    Could a cause be driving around with an exhaust leak before cat for 6 months?
    Is it odd to have a bad sensor on a car with 35k miles??

  12. #12
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    Water poured out of the connector and it shorted out the sensor. 02 sensor was indeed the issue.

  13. #13
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    How much does an 02 sensor goes for at the dealer?

  14. #14
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    58.50 here plus tax. I just bought a bosch at auto parts store for 28.00

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