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2. Reconnect all connectors.
3. Turn the ignition switch to ON (II).
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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5. DO THE PCM IDLE LEARN PROCEDURE .
6. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P0122 TP SENSOR A CIRCUIT LOW VOLTAGE
Is DTC P0122 indicated?
YES : Check for poor connections or loose terminals at the throttle body and the PCM. If the PCM was
updated, substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE , then recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM UPDATE
or PCM REMOVAL AND INSTALLATION . If any other Pending or Confirmed DTCs are indicated, go to
the indicated DTC's troubleshooting.
DTC P0123: TP SENSOR A CIRCUIT HIGH VOLTAGE
Fig. 46: DTC Troubleshooting Flow Chart (P0123)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information See HOW TO TROUBLESHOOT
THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS
SYSTEMS .
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P0123 TP SENSOR A CIRCUIT HIGH VOLTAGE
1. Problem verification:
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1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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3. Check the parameter(s) below with the HDS.
Threshold
Values
Current conditions
Unit Values Unit
Signal
TP SENSOR A More than 4.8 V
Do the current condition(s) match the threshold?
YES : The failure is duplicated. Go to step 2.
NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
the throttle body and the PCM.
2. Determine possible failure area (SG3(ETCS) line, others):
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1. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P0123 TP SENSOR A CIRCUIT HIGH
VOLTAGE
P0223 TP SENSOR B CIRCUIT HIGH
VOLTAGE
Are DTC P0123 and P0223 indicated at the same time?
YES : Go to step 5.
NO : Go to step 3.
3. Determine possible failure area (TH 1 line, throttle body):
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1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connector.
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Throttle body 6P connector
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3. Turn the ignition switch to ON (II).
4. Measure the voltage between test points 1 and 2.
Test condition IG ON (II)
Throttle body 6P connector: disconnected
Test circuit TH 1
Test point 1 Throttle body 6P connector No. 6 (LT GRN)
Test point 2 Body ground
Fig. 47: Measuring Voltage Between Throttle Body 6P Connector No. 6 (LT GRN) And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there about 5.0 V?
YES : Replace the throttle body See THROTTLE BODY REMOVAL AND INSTALLATION ,
THROTTLE BODY DISASSEMBLY AND REASSEMBLY or THROTTLE BODY CLEANING ,
then do the repair verification .
NO : Go to step 4.
4. Open wire check (TH 1 line):
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1. Turn the ignition switch to LOCK (0).
2. Jump the SCS line with the HDS.
3. Disconnect the following connector.
PCM connector C (49P)
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4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Throttle body 6P connector: disconnected
PCM connector C (49P): disconnected
Test circuit TH 1
Test point 1 PCM connector C (49P) No. 30 (LT GRN)
Test point 2 Throttle body 6P connector No. 6 (LT GRN)
Fig. 48: Checking Continuity Between PCM Connector C (49P) No. 30 (LT GRN) And
Throttle Body 6P Connector No. 6 (LT GRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The TH 1 wire is OK. Update the PCM See PCM REMOVAL AND INSTALLATION or
PCM UPDATE if it does not have the latest software, or substitute a known-good PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE , then do the repair verification .
NO : Repair an open in the TH 1 wire between the PCM (C30) and the throttle body, then do the repair
verification .
5. Open wire check (SG3(ETCS) line):
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1. Turn the ignition switch to LOCK (0).
2. Jump the SCS line with the HDS.
3. Disconnect the following connectors.
PCM connector C (49P)
Throttle body 6P connector
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4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
PCM connector C (49P): disconnected
Throttle body 6P connector: disconnected
Test circuit SG3(ETCS)
Test point 1 PCM connector C (49P) No. 14 (GRY)
Test point 2 Throttle body 6P connector No. 3 (GRY)
Fig. 49: Checking Continuity Between PCM Connector C (49P) No. 14 (GRY) And Throttle
Body 6P Connector No. 3 (GRY)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The SG3(ETCS) wire is OK. Update the PCM See PCM REMOVAL AND INSTALLATION
or PCM UPDATE if it does not have the latest software, or substitute a known-good PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE , then do the repair verification .
NO : Repair an open in the SG3(ETCS) wire between the PCM (C14) and the throttle body, then do the
repair verification .
REPAIR VERIFICATION
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1. Turn the ignition switch to LOCK (0).
2. Reconnect all connectors.
3. Turn the ignition switch to ON (II).
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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5. DO THE PCM IDLE LEARN PROCEDURE .
6. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P0123 TP SENSOR A CIRCUIT HIGH VOLTAGE
Is DTC P0123 indicated?
YES : Check for poor connections or loose terminals at the throttle body and the PCM. If the PCM was
updated, substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE , then recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are
indicated, go to the indicated DTC's troubleshooting.
DTC P0125: ECT SENSOR 1 MALFUNCTION/SLOW RESPONSE
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual
