Scan/code PO725

Good morning my name is Roy and I will assist.

The code is for engine speed sensor. It is a circuit issue between the engine control module and the transmission control module. There may be damage from the way the harness is run or it could be a connector that has either a bad connection or damaged pins from exposure to the outside elements.
Attached is the possible cause listed for this code.

Roy

More information for you.

Roy

DTC P0725 ENGINE SPEED SIGNAL

Description
The engine speed signal is sent from the ECM to the TCM.

CONSULT-II Reference Value
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On Board Diagnosis Logic
- This is not an OBD-II self-diagnostic item.
- Diagnostic trouble code "P0725 ENGINE SPEED SIG" with CONSULT-II is detected when TCM does not receive the engine speed signal (input by CAN communication) from ECM.

Possible Cause
Harness or connectors
(The ECM to the TCM circuit is open or shorted.)

DTC Confirmation Procedure NCS0014R

CAUTION: Always drive vehicle at a safe speed.

NOTE: If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

After the repair, touch "ERASE" on "SELF-DIAG RESULTS" and then perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-II

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1. Turn ignition switch ON and select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
2. Start engine and maintain the following conditions for at least 10 consecutive seconds.
PRI SPEED SEN: More than 1000 rpm
3. If DTC is detected, go to CVT-106, "Diagnostic Procedure".

Diagnostic Procedure
1. CHECK DTC WITH ECM

With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT-II.
OK or NG
OK >> GO TO 2.
NG >> Check the DTC detected item.

2. CHECK DTC WITH TCM

With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT-II. Refer to CVT-67, "SELF-DIAGNOSTIC RESULT MODE".
OK or NG
OK >> GO TO 3.
NG >> Check the DTC detected item.
- If DTC of CAN communication line is detected, go to CVT-74, "DTC U1000 CAN COMMUNICATION LINE". See: A L L Diagnostic Trouble Codes ( DTC ) > U Code Charts > U1000

3. CHECK INPUT SIGNALS

With CONSULT-II

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1. Start engine.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
3. While monitoring "ENG SPEED SIG", check for engine speed change corresponding to "ACC PEDAL OPEN".

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OK or NG
OK >> GO TO 4.
NG >> Check ignition signal circuit.

4. CHECK DTC
Perform "DTC Confirmation Procedure". Refer to CVT-106, "DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.

5. CHECK TCM
1. Check TCM input/output signals.
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.