DTC P0715: A Problem In Input Shaft (MAINSHAFT) Speed Sensor Circuit

WARNING: This page is about a different car, the 2004 Honda Odyssey, 2003 Honda Odyssey, and 2002 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Record all freeze data and review General Troubleshooting Information (see General Troubleshooting Information ) before you troubleshoot.

Code P0715 (code 15) doesn't always mean there's an electrical problem in the input shaft (mainshaft) or output shaft (countershaft) speed sensor circuit; code P0715 (code 15) may also indicate a mechanical problem in the transmission. Any problem causing irregular countershaft-to-mainshaft speed difference can cause this code.

A mainshaft speed of 0 MPH ( km/h) in the freeze data usually means there is an electrical problem in the input shaft (mainshaft) speed sensor circuit. A mainshaft speed that is higher or lower than countershaft and vehicle speed sensor usually means a hydraulic system problem caused the DTC.

Turn the ignition switch ON (II).
Check whether the scan tool or the HDS indicates the code for the throttle position (TP) sensor or the engine coolant temperature (ECT) sensor.
Does the scan tool or the HDS indicate the code for the TP sensor or the ECT sensor?

YES - Perform the Troubleshooting for the TP sensor or the ECT sensor. Recheck for code P0715 after troubleshooting.

NO - Go to step 3.
Turn the ignition switch OFF.
Disconnect the input shaft (mainshaft) speed sensor connector.
Turn the ignition switch ON (II).
Measure the voltage between input shaft (mainshaft) speed sensor connector terminal No. 1 and body ground.
Is there about 5 V?

YES - Go to step 7.

NO - Go to step 15.

Fig 1: Measuring Voltage Between Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 1 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Disconnect PCM connector D (16P).
Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground.
Is there continuity?

YES - Repair short to ground in the wire between PCM connector terminal D11 and the input shaft (mainshaft) speed sensor.

NO - Go to step 10.

Fig 2: Checking Continuity Between Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 2 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect PCM connector D (16P).
Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and body ground.
Is there continuity?

YES - Go to step 12.

NO - Repair open in the wire between PCM connector terminal D12 and the input shaft (mainshaft) speed sensor.

Fig 3: Checking Continuity Between Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 3 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Measure the voltage between input shaft (mainshaft) speed sensor connector terminals No. 2 and No. 3.
Is there about 5 V?

YES - Go to step 19.

NO - Go to step 14.

Fig 4: Measuring Voltage Between Input Shaft (Mainshaft) Speed Sensor Connector Terminals No. 2 & No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the voltage between PCM connector terminals D11 and D12.
Is there about 5 V?

YES - Repair open in the wire between PCM connector terminal D11 and the input shaft (mainshaft) speed sensor.

NO - Check for loose terminal fit in the PCM connectors D11, D12, and C28. If necessary, substitute a known-good PCM and recheck only if the code resets after being cleared.

Fig 5: Measuring Voltage Between PCM Connector Terminals D11 & D12
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the voltage between PCM connector terminal C28 and body ground.
Is there 4.75-5.25 V?

YES - Repair open in the wire between PCM connector terminal C28 and the input shaft (mainshaft) speed sensor.

NO - Go to step 16.

Fig 6: Measuring Voltage Between PCM Connector Terminal C28 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Disconnect PCM connector C (31P).
Check for continuity between PCM connector terminal C28 and body ground.
Is there continuity?

YES - Repair short to ground in the wire between PCM connector terminal C28 and the input shaft (mainshaft) speed sensor.

NO - Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck only if the code resets after being cleared.

Fig 7: Checking Continuity Between PCM Connector Terminal C28 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect the input shaft (mainshaft) speed sensor connector.
Measure the voltage between PCM connector terminals D11 and D12.
Is there 0 V to about 5 V?

YES - Go to step 21.

NO - Replace the input shaft (mainshaft) speed sensor (see Input Shaft (Mainshaft) Speed Sensor Replacement ).

Fig 8: Measuring Voltage Between PCM Connector Terminals D11 & D12
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Start the engine, and run it at idle in P position.
Hold the engine at idle, and measure the voltage between PCM connector terminals D11 and D12. See Fig 8.
Is there 1.5-3.5 V?

YES - Check for loose terminal fit in the PCM connectors D11, D12, and C28. Clear DTCs. If necessary (only if the DTC recodes), substitute a known-good PCM and recheck only if the DTC recodes.

NO - Replace the input shaft (mainshaft) speed sensor (see Input Shaft (Mainshaft) Speed Sensor Replacement ).