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 : Intermittent failure, the system is OK at this time.
REPAIR VERIFICATION
ο‘
1. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P1109 BARO SENSOR CIRCUIT OUT OF RANGE
HIGH
Is DTC P1109 indicated?
YES : If the PCM was updated, substitute a known-good PCM See PCM UPDATE or PCM REMOVAL
AND INSTALLATION , then recheck. If the PCM was substituted, go to step 1.
NO : If the PCM was updated, 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 P1116: ECT SENSOR 1 RANGE/PERFORMANCE PROBLEM
Fig. 282: DTC Troubleshooting Flow Chart (P1116)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
ο¬
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 .
ο¬
If DTC P0111 is stored at the same time as DTC P1116, troubleshoot DTC
P0111 first, then recheck for DTC P1116.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P1116 ECT SENSOR 1 CIRCUIT
RANGE/PERFORMANCE PROBLEM
1. Connector visual check:
ο‘
1. Check for poor connections or loose terminals at these locations:
ο¬
ECT sensor 1
ECT sensor 2
ο¬
Are the connections and terminals OK?
YES : The connections and terminals are OK. Go to step 2.
NO : Repair the connections or terminals, then do the repair verification .
2. PGM-FI system check:
ο‘
1. Turn the ignition switch to ON (II).
ο‘
2. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P1116 ECT SENSOR 1 CIRCUIT
RANGE/PERFORMANCE PROBLEM
P2183 ECT SENSOR 2 CIRCUIT
RANGE/PERFORMANCE PROBLEM
Are DTC P1116 and P2183 indicated at the same time?
YES : Go to step 5.
NO : Only DTC P1116 is indicated. Go to step 3.
3. ECT sensor 1 performance check:
ο‘
ο‘
1. Start the engine, and let it idle for 10 minutes.
2. Check the parameter(s) below with the HDS.
Threshold
Current conditions
Signal
Values
Unit Values Unit
Less than 108 Β°F
Less than 42 Β°C
ECT SENSOR 1
Do the current condition(s) match the threshold?
YES : REPLACE ECT SENSOR 1 , then do the repair verification .
NO : ECT sensor 1 is OK at this time. Go to step 4.
4. Problem verification:
ο‘
ο‘
ο‘
ο‘
ο‘
1. Turn the ignition switch to LOCK (0).
2. Allow ECT sensor 1 to cool to the ambient temperature.
3. Note the ambient temperature.
4. Turn the ignition switch to ON (II).
5. Quickly note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
Current conditions
Signal
Values
Unit
ECT SENSOR 1
ο‘
6. Compare the value of ECT SENSOR 1 and the ambient temperature.
Does the value of ECT SENSOR 1 differ 5.4 Β°F (3 Β°C) or more from the ambient temperature?
YES : REPLACE ECT SENSOR 1 , then do the repair verification .
NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
ECT sensor 1, ECT sensor 2, and the PCM.
5. ECT sensor 1 performance check:
ο‘
1. Start the engine, and let it idle for 10 minutes.
2. Check the parameter(s) below with the HDS.
ο‘
Threshold
Current conditions
Signal
Values
Unit Values Unit
Less than 108 Β°F
Less than 42 Β°C
ECT SENSOR 1
Do the current condition(s) match the threshold?
YES : REPLACE ECT SENSOR 1 , then do the repair verification .
NO : Go to step 6.
6. ECT sensor 2 performance check:
ο‘
1. Let the engine idle for 10 minutes.
ο‘
2. Check the parameter(s) below with the HDS.
Threshold
Current conditions
Signal
Values
Unit Values Unit
Less than 108 Β°F
Less than 42 Β°C
ECT SENSOR 2
Do the current condition(s) match the threshold?
YES : REPLACE ECT SENSOR 2 , then do the repair verification .
NO : Go to step 7.
7. Problem verification:
ο‘
ο‘
ο‘
ο‘
ο‘
1. Turn the ignition switch to LOCK (0).
2. Allow the sensors to cool to the ambient temperature.
3. Note the ambient temperature.
4. Turn the ignition switch to ON (II).
5. Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the
HDS.
Current conditions
Signal
Values
Unit
ECT SENSOR 1
ECT SENSOR 2
ο‘
6. Compare the value of ECT SENSOR 1 and the value of ECT SENSOR 2 to the ambient
temperature individually.
Does either sensor differ more than 5.4 Β°F (3 Β°C) from the ambient temperature?
YES : Replace the sensor that differed more than 5.4 Β°F (3 Β°C) from the ambient temperature, then do the
repair verification .
NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
ECT sensor 1, ECT sensor 2, and the PCM.
REPAIR VERIFICATION
ο‘
ο‘
1. Turn the ignition switch to ON (II).
2. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
ο‘
ο‘
3. DO THE PCM IDLE LEARN PROCEDURE .
4. Check for Pending or Confirmed DTCs with the HDS.
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P1116 ECT SENSOR 1 CIRCUIT
RANGE/PERFORMANCE PROBLEM
Is DTC P1116 indicated?
YES : Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM, then go to
step 1.
NO : Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated
DTC's troubleshooting.
DTC P1128: MAP SENSOR SIGNAL LOWER THAN EXPECTED
2024 Honda CR-V Owner's Manual
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