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DTC P2182 (6-Speed A/T, 2018 9-Speed A/T)

DTC P2182  : ECT Sensor 2 Out of Range

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

DTC Description Confirmed DTC Pending DTC
P2182 ECT Sensor 2 Out of Range    

DTC (PGM-FI)

  1. Problem verification 1

    - 1. Turn the vehicle to the ON mode.

    - 2. Check the parameter (s) below with the HDS.

    Signal Threshold Current conditions
    Values Unit Values Unit
    ECT Sensor 2 Less than 0.14 V    

    Data List

    Do the current condition (s) match the threshold?

    YES 

    The failure is duplicated. Go to step 3.

    NO 

    Go to step 2.

  2. Problem verification 2

    - 1. Check the parameter (s) below with the HDS.

    Signal Threshold Current conditions
    Values Unit Values Unit
    ECT Sensor 2 More than 4.99 V    

    Data List

    Do the current condition (s) match the threshold?

    YES 

    The failure is duplicated. Go to step 5.

    NO 

    Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 2 and the PCM.

    If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

  3. Determine possible failure area (ECT sensor 2, others)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Disconnect the following connector.

    ECT Sensor 2 2P connector

    - 3. Turn the vehicle to the ON mode.

    - 4. Check the parameter (s) below with the HDS.

    Signal Threshold Current conditions
    Values Unit Values Unit
    ECT Sensor 2 Less than 0.14 V    

    Data List

    Do the current condition (s) match the threshold?

    YES 

    Go to step 4.

    NO 

    Replace ECT sensor 2 - Refer to: ECT Sensor 2 Removal and Installation .

  4. Shorted wire check (TW2 SENSOR/TW2 line)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Jump the SCS line with the HDS, and wait more than 1 minute.

    - 3. Disconnect the following connector.

    PCM connector A (51P)

    - 4. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    ECT Sensor 2 2P connector: disconnected
    PCM connector A (51P): disconnected
    Test point 1 ECT sensor 2 2P connector (female terminals) No. 2:
    Test point 2 Body ground
    GHH307975Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Repair a short in the TW2 SENSOR/TW2 wire between the PCM (A31) and ECT sensor 2.

    NO 

    The TW2 SENSOR/TW2 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. - Refer to:

    PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T) .

    If DTC P2182 goes away and the PCM was substituted, replace the original PCM - Refer to:

    PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T) .

  5. Determine possible failure area (ECT sensor 2, others)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Disconnect the following connector.

    ECT sensor 2 2P connector

    - 3. Connect terminals A and B with a jumper wire.

    Terminal A ECT sensor 2 2P connector (female terminals) No. 1:
    Terminal B ECT sensor 2 2P connector (female terminals) No. 2:
    GHH307976Courtesy of HONDA, U.S.A., INC.

    - 4. Turn the vehicle to the ON mode.

    - 5. Check the parameter (s) below with the HDS.

    Signal Threshold Current conditions
    Values Unit Values Unit
    ECT Sensor 2 More than 4.99 V    

    Data List

    Do the current condition (s) match the threshold?

    YES 

    Go to step 6.

    NO 

    Replace ECT sensor 2 - Refer to: ECT Sensor 2 Removal and Installation .

  6. Determine possible failure area (TW2 SENSOR/TW2 line, others)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Remove the jumper wire from the ECT sensor 2 2P connector.

    - 3. Turn the vehicle to the ON mode.

    - 4. Measure the voltage between test points 1 and 2.

    Test condition Vehicle ON mode
    ECT sensor 2 2P connector: disconnected
    Test point 1 ECT sensor 2 2P connector (female terminals) No. 2:
    Test point 2 Body ground
    GHH307977Courtesy of HONDA, U.S.A., INC.

    Is there about 5.0 V?

    YES 

    Go to step 7.

    NO 

    Go to step 8.

  7. Open wire check (SG/SG6 line)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Jump the SCS line with the HDS, and wait more than 1 minute.

    - 3. Disconnect the following connector.

    PCM connector A (51P)

    - 4. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    ECT sensor 2 2P connector: disconnected
    PCM connector A (51P): disconnected
    Test point 2 ECT sensor 2 2P connector (female terminals) No. 1:
    Test point 1 PCM connector A (51P) No. 20 - Refer to:
    PCM Connector for Inputs and Outputs (16-20 6-Speed A/T), or
    PCM Connector for Inputs and Outputs (16-18 9-Speed A/T)
    GHH307978Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The SG/SG6 line is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. - Refer to:

    PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T) .

    If DTC P2182 goes away and the PCM was substituted, replace the original PCM - Refer to:

    PCM Removal and Installation (19-21 9-Speed A/T) .

    NO 

    Repair an open in the SG/SG6 line between the PCM (A20) and ECT sensor 2.

  8. Open wire check (TW2 SENSOR/TW2 line)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Jump the SCS line with the HDS, and wait more than 1 minute.

    - 3. Disconnect the following connector.

    PCM connector E (80P)

    - 4. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    ECT sensor 2 2P connector: disconnected
    PCM connector A (51P): disconnected
    Test point 1 ECT sensor 2 2P connector (female terminals) No. 2:
    Test point 2 PCM connector A (51P) No. 31 - Refer to:
    PCM Connector for Inputs and Outputs (19-21 9-Speed A/T)
    GHH307979Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The TW2 SENSOR/TW2 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. - Refer to:

    PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T)

    If DTC P2182 goes away and the PCM was substituted, replace the original PCM - Refer to:

    PCM Removal and Installation (6-Speed A/T, 16-18 9-Speed A/T) .

    NO 

    Repair an open in the TW2 SENSOR/TW2 wire between the PCM (A31) and ECT sensor 2.

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