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P0298 fuel trim engine code

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6ya6ya
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Posted on Jan 02, 2017

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dhorsefield
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SOURCE: WHAT IS CODE 173 FUEL TRIM MALFUNCTION BANK-2?

Generally when you get a code for both banks, you do not have an engine failure, but you probably have a significant vacuum leak. First check the rubber hoses around the PCV valve to motor intake and if any rubber is squishy or oily that would indicate a leaking hole. Also check around the entire intake with carb cleaner (engine revs while running if you spray the cleaner near a leaking gasket or intak hose hole).

Posted on Sep 28, 2010

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SOURCE: I get an engine light and problem code "Fuel Trim

I would try thermostate and make sure engine is getting to proper operating temp..

Posted on Jan 09, 2011

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What is a fuel trim bank 1 on a 2006 xc90 volvo an whatvis a evap emission system switching valve mean


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    Jul 20, 2016 | 2006 Volvo XC90

    2 Answers

    Check Engine Light Code P1174


    P1174 - Fuel trim adaptive malfunction (Bank 1)
    P1175 - Fuel trim adaptive malfunction (Bank 2)

    Jun 02, 2008 | 1998 BMW Z3 Roadster

    1 Answer

    Fuel trim bank one condition 2010 malibu


    Fuel trim out of range is an indication of too much fuel (leaky injector) or too little fuel (vacuum leak) with out seeing the specific code its difficult to tell you where to look. Post the code and engine size, 3.5 ltr, 2.5 ltr...etc.... I can give you specifics.

    Feb 05, 2013 | 2010 Chevrolet Malibu

    1 Answer

    1997 e350 triton v 10 engine code po171


    Diagnostic Test Code (DTC) P0171 is defined by SAE J2012 as "System Too Lean Bank 1".
    This is what is known as a fuel trim code. Something is causing the fuel trim on bank 1 of your engine to reach a predetermined maximum set point. This can be caused by many things including vacuum leaks, malfunctioning injectors, a fauly mass airflow sensor, or even a catalytic converter that is clogged up.

    If there are no fuel trim problems on the opposite bank, then there is a problem that affects only one bank. It is necessary to access the fuel trim data to correctly identify the problem. You may have fuel trim problems on the opposite bank that have not yet set a code. If the fuel trim data proves that there is no problem on the opposite bank, then this rules out several possiblities like the mass airflow sensor, as it will affect BOTH banks, not just one.

    To put it simply: Proper diagnosis required.

    Apr 12, 2012 | Cars & Trucks

    1 Answer

    Code P2187 on 2008 Suzuki Forenza


    DTC P2187: Fuel Trim System Lean at Idle

    Fuel Trim Description
    The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the ECM determines fuel delivery based on sensor signals without Heated Oxygen Sensor (HO2S) input. During Closed Loop, the HO2S inputs are added and used by the ECM to calculate short and long term fuel trim fuel delivery adjustments. If the HO2S indicate a lean condition, fuel trim values will be above 0%. If the Heated Oxygen Sensors (HO2S) indicate a rich condition, fuel trim values will be below 0%. Short term fuel trim values change rapidly in response to the HO2S signals. Long term fuel trim makes coarse adjustments in order to maintain an air/fuel ratio of 14.7 : 1.

    This code can only set when the engine control is in Closed Loop. The engine must be fully warmed up.

    This must be diagnosed using a scan tool that can read engine data in order to determine the actual cause of the problem. It can be caused by the following things:

    > Vacuum leaks
    > Malfunctioning, dirty, or skewed Mass Airflow Sensor (MAF)
    > Malfunctioning or skewed Manifold Absolute Pressure Sensor (MAP)
    > Dirty or sticking injectors
    > Malfunctioning or improperly programmed Powertrain Control Module (PCM)

    Aug 17, 2011 | Suzuki Forenza Cars & Trucks

    1 Answer

    2002 Ford Mustang GT I used OBD-II to get the trouble codes, I got P0174,P0301,P302,P316 Freeze Frame Information: 1. DTC for which Freeze Frame was Stored - P0174 2. Fuel System 1 Status - Closed...


    Because you got a misfire on cylinder #1 PO301
    A misfire on cylinder #2 PO302
    Misfires first 1000 rev PO316
    O2 Codes PO 174
    Etc,Etc


    The LTT, is the result of not learning (yet-thus long term)
    what isn't working correctly---Your Engine

    Replace bad Coil--which ever is missing
    Do not go by the codes,alone ,TEST

    Dec 10, 2010 | 2002 Ford Mustang

    1 Answer

    Dodge ram trouble codes p0298 and p0296


    P0296 Cylinder 12 Contribution/Range Fault
    Is triggered when the Power Train Control Module (PCM) detects that the acceleration rate of the crankshaft for Cylinder #12 was less than a calibrated amount. During normal conditions the PCM turns the Fuel Injectors ON and OFF in the Fuel Injection System.
    Symptoms:
    - Engine Light ON (or Service Engine Soon Warning Light)
    - Engine Misfire
    - Engine Run Rough
    - Low MPG

    Possible Causes:
    - Fuel Injector #12
    - Faulty or Corroded Fuel Injector #12 Connector
    - Plugged #12 Fuel Injector
    - Dirty #12 Fuel Injector

    Possible Solution:
    - Clean Fuel Injector #12 Connector
    - Clean Fuel Injector #12
    - Replaced Fuel Injector

    P0298 - Engine Oil Over Temperature Condition
    Indicates the Engine Oil Temperature Protection (EOT) strategy in the Power Train Control Module (PCM) has been activated. This temporarily prohibits high engine speed operation by disabling injectors, reducing the risk of engine damage from high engine oil temperature. Note: On engines which are equipped with an oil temperature sensor, the PCM reads oil temperature to determine if it is excessive. When an oil temperature sensor is not present, the PCM uses an oil algorithm to infer actual temperature. Engine shutdown strategy function is the same on vehicles with and without oil temperature sensors.

    Symptoms:
    - Engine Light ON (or Service Engine Soon Warning Light)
    - Lack/Loss of Power
    - Engine Surge

    P0298 is set when the vehicle has been running below 1,000 rpm and less than 20 mg/stroke MFDES with EOT sensor signal reading above 110C (230F). The time to set the fault is dependent on EOT and Intake Air Temperature (IAT) temperatures, and can vary between approx. 15 to 45 minutes

    Possible Causes:
    - Very high engine RPM for an extended period of time.
    - Overheating condition.
    - Malfunction EOT sensor or circuit (vehicles w/EOT sensor).

    Possible Solution:
    1. Inspect EOT sensor circuitry at sensor and PCM. Inspect for damage, loose or pushed-out pins, loose or poorly crimped wires
    2. If connectors are ok check cooling system, radiator, fan/clutch operation, thermostat
    3. If cooling system is ok carry out KOEO On-Demand Self Test
    4. If other fault codes are present after test repair them, if only P0298 is present clear codes
    5. Let vehicles sit for 8 hours and then KOEO
    6. Monitor EOT in live data
    7. If EOT sensor reading is above 110*C(230*F) replace sensor
    8. IF EOT is below 110*C check continuous memory DTCs
    9. If P0298 is present replace PCM

    Hope helps (remember rated and comment this).

    Aug 25, 2010 | 2008 Dodge Ram 1500 2WD

    2 Answers

    Function of oxygen sensor?


    It measures the oxygen in the exhaust system, for instance, if the fuel is to rich it sends values to the computer and the computer will adjust the fuel and timing to bring it back into perimeters

    Jun 20, 2010 | 2003 Mitsubishi Galant

    3 Answers

    I got a diagnostic reporting Code P0298 on my 2005 dodge stratus 2.7 L -6. They want $622 to replace four of them. Is this necessary?


    P0298=Engine Oil Over Temperature,
    I have no idea what they are replacing?????
    You have one of the worst engines out there!
    These engines are total junk and gunk up inside enough to blow the engine,This is the only engine ever designed totally by a computer,Chrysler has shifted all blame on this engines failure to the customers,They have never stepped up to admit it was their fault.Go to www.google.com type in chrysler 2.7 engines, you are going to get really bad,you might want to think about unloading this car now!

    Dec 18, 2009 | 2004 Dodge Stratus

    2 Answers

    2001 Hyundai and I have the same code and problem


    Firstly, these codes are set when the fuel 'TRIMS' are out of spec (either tool LEAN - P1123, OR too RICH - P1128). The air/fuel control system, in addition to a number of sensors, includes the following components and systems: a. Intake air system. b. Exhaust system. c. Evaporative emissions control system (includes purge control solenoid valve). d. Fuel injectors. e. Fuel pressure regulator. f. Fuel pump. For the air/fuel ratio to be within limits, all of the sensors, components and systems associated with the air/fuel control system must function within normal parameters. STOP replacing parts/sensors unless you can VERIFY they are defective! The Powertrain Control Module (PCM) on Hyundai OBD II vehicles (all 1996 and later models) can adjust the engine Air to Fuel (A/F) ratio to compensate for variations in operating conditions. This adjustment only takes place during "Closed Loop" operation. The PCM uses input from the following components to determine the amount of fuel to deliver:
    • Oxygen sensors
    • Air flow sensor
    • Coolant temperature sensor
    • Intake air temperature sensor
    • Throttle position sensor
    • Engine speed sensor
    The ability to adjust the A/F ratio enables the PCM to compensate for engine, fuel and sensor variations as well as temperature, altitude and humidity. This enables the vehicle to maintain a stoichiometric (14.7 to 1) A/F ratio that will ensure optimal engine performance and minimal emissions. Since the PCM can change the A/F ratio to compensate for a wide range of conditions, an indicator is needed to identify that a compensation has been made. Fuel Trim values shown on the HDS scan tool are the primary indicator that an adjustment in fuel delivery has taken place. The scan tool displays the PCM's A/F ratio compensation as "Short Term" Fuel Trim (ST TRIM), Long Term Fuel Trim (LT TRIM), and "Oxygen Sensor" Trim (TRIM B1 S1 and B1 S2). The most beneficial diagnostic information comes from "Short Term" Fuel Trim and "Long Term" Fuel Trim. AFTER ALL THIS, I think it's simply your Coolant Temperature Sensor giving 'FALSE' information to the engine control module/powertrain control module (ECM/PCM).

    Aug 11, 2009 | 2001 Hyundai Accent

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