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5/12/2004
I’ve had the SES light staring me in the face for a while now. It first came
on after I had taken the Apten chip out and put it back in. So I pulled the chip
and reset the PCM in the process. The light came on 10 minutes down the road. I
reset the PCM again, and it stayed off for about 50 miles before coming on
again. I had the codes scanned at A/Z, and the result was 16XX or 17XX (should
have written that down!) something about an Idle Speed Sensor (?) I checked
around on the V8SHO.com site and the SHOTimes FAQ to no avail.
The car is running just fine. The tach does indicate a very slight variation in
idle (like 50rpm variance or less) but the idle isn’t rough or anything. Gas
mileage is fine (27mpg highway.)
As a shot in the dark, I pulled the two electrical plugs on the TB and cleaned
out the connectors with contact cleaner. I even managed to get at the small grey
plug right under the TB (on the block) and clean that one out. The orange one
next to it was too much of a PITA to get at. After securing all the connections,
I started up the car and drove to the gas station. By the time I got there, the
darn SES light came back on. Any ideas?
Dan Carman
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I just looked up the code. It was P1755 - Intermediate Speed Sensor. The guy
said “Idle Speed Sensor” but I think he just read it wrong (I verified that it
was “Intermediate” on the v8sho.com site.) Anyone know what that means or how I
could fix it?
Dan
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NOTE: Prior to entering pinpoint tests, the vehicle harness must be checked
for continuity and shorts, and the PCM must be checked for any concerns. Refer
to the Powertrain Control/Emissions Diagnosis Manual for proper procedures.
NOTE: If any non-transaxle DTCs appear, service those DTCs first. They could
affect the electrical operation of the transaxle. Record and erase codes from
continuous memory after repairs have been performed. After servicing any DTCs in
the Quick Test, the Quick Test should be repeated.
NOTE: Check the PCM system wiring harness for proper connection, bent or broken
pins, corrosion, loose wires, proper routing, proper seals and their condition.
Check the PCM sensors and actuators for physical damage.
| Five Digit DTC | Component | Description | Condition | Symptom | Action |
|---|---|---|---|---|---|
| P0102, P0103, P1100, P1101 | MAF | MAF concerns. | MAF system has a malfunction which may cause a transaxle concern. Refer to PC/ED Manual for diagnosis. | Incorrect shift schedule, high/low EPC pressure. Incorrect converter engagement scheduling. Symptoms similar to a TP failure. | PC/ED |
| P0112 | IAT | IAT indicates 125°C (254°F). | Voltage drop across IAT exceeds scale set for temperature 125° C (254°F). | Incorrect EPC pressure. Either high or low which will result in harsh or soft shifts. | PC/ED |
| P0113 | IAT | IAT indicates -40°C (-40°F). | Voltage drop across IAT exceeds scale set for temperature -40° C (-40°F). | Incorrect EPC pressure. Either high or low which will result in harsh or soft shifts. | PC/ED |
| P0114 | IAT | IAT out of on-board diagnostic range. | IAT temperature higher or lower than expected during KOEO and KOER. | Rerun on-board diagnostic at normal operating temperature. | PC/ED |
| P1116 | ECT | ECT out of on-board diagnostic range. | ECT temperature higher or lower than expected during KOEO and KOER. | Rerun on-board diagnostic at normal operating temperature. | PC/ED |
| P0117 | ECT | ECT indicates 125°C (254°F). | ECT temperature higher or lower than expected during KOEO and KOER. | Torque converter clutch will always be off, resulting in low fuel economy. | PC/ED |
| P0118 | ECT | ECT indicates -40°C (-40°F). | ECT temperature higher or lower than expected during KOEO and KOER. | Torque converter clutch will always be off, resulting in low fuel economy. | PC/ED |
| P0122, P0123, P1120 | TP | TP DTCs. | Powertrain control module has detected an error. This error may cause a transaxle concern. Refer to the PC/ED Manual for diagnosis. | Harsh engagements, firm shift feel, abnormal shift schedule, torque converter clutch does not engage. Torque converter clutch cycling. | PC/ED |
| P0300- P0308, P0320, P0340, P1351- P1364 |
EI | EI System | EI system has a malfunction which may cause a transaxle concern. | Engine malfunction, no converter engagement. | PC/ED |
| P0707 | TR | TR circuit below minimum voltage. | TR sensor, circuit or powertrain control module shorted or grounded. | Increase in EPC pressure, firm shifts, harsh engagements, default to 3rd gear, may activate MIL. | Pinpoint Test D |
| P0708 | TR | TR circuit above maximum voltage. | TR sensor, circuit or PCM indicates open. | Increase in EPC pressure, firm shifts, harsh engagements, No Overdrive, may activate MIL. | Pinpoint Test D |
| P0712 | TFT | 171°C (340°F) indicated TFT sensor circuit grounded. | Voltage drop across TFT sensor exceeds scale set for temperature of 171° C (340°F). | Torque converter clutch and stabilized shift schedule may be enabled sooner after cold start. Harsh or soft shifts. | Pinpoint Test B |
| P0713 | TFT | -43°C (-45°F) indicated TFT sensor circuit open. | Voltage drop across TFT sensor exceeds scale set for temperature -43° C (-45°F). | Torque converter clutch and stabilized shift schedule may be enabled sooner after cold start. Harsh or soft shifts. | Pinpoint Test B |
| P0715 | TSS | Insufficient input from Turbine Shaft Speed (TSS) Sensor. | Powertrain control module detected a loss of TSS signal during operation. | Incorrect TCC engagements. Increased engine rpm on engagements, harsh shifts (MIL on). | Pinpoint Test F |
| P0731 | SS1, SS2, or internal parts | 1st gear failure. | Incorrect gear ratio while commanding 1st gear. | Improper gear selection depending on condition mode and manual lever position: see shift solenoid operation chart. Shift errors may also be due to other internal transaxle concerns (e.g., stuck valves, damaged friction material) (TCIL flashing, California only). | Pinpoint Test A |
| P0500, P1500, U1039, P0503 | VSS | Insufficient VSS input. | Loss of VSS input signal detected. NOTE: P0500 may also be set by a low transaxle fluid level. |
Harsh engagements, firm shift feel, abnormal shift schedule, unexpected downshift may occur at close throttle. Torque converter clutch will not engage. | PC/ED |
| P0552, P0553 | PSP | PSP circuit open or shorted during KOEO. | PSP circuit open or shorted. | Failed ON—EPC slightly high, firm engagements, firm shifts, harsh coastdown shifts. Failed OFF—EPC pressure slightly low during increased loading of the vehicle power steering. | PC/ED |
| P1550, P1650, P1651 | PSP | PSP not changing state during KOER. | Operator did not rotate steering wheel during KOER. | Malfunction detected. Rerun on-board diagnostic and rotate steering wheel. | PC/ED |
| P0732 | SS1, SS2, or internal parts | 2nd gear failure. | Incorrect gear ratio while commanding 2nd gear. | Improper gear selection depending on condition mode and manual lever position: see shift solenoid operation chart. Shift errors may also be due to other internal transaxle concerns (e.g., stuck valves, damaged friction material) (TCIL flashing, California only). | Pinpoint Test A |
| P0733 | SS1, SS3, or internal parts | 3rd gear failure. | Incorrect gear ratio while commanding 3rd gear. | Improper gear selection depending on condition mode and manual lever position: see shift solenoid operation chart. Shift errors may also be due to other internal transaxle concerns (e.g., stuck valves, damaged friction material) (TCIL flashing, California only). | Pinpoint Test A |
| P0734 | SS1, SS3, or internal parts | 4th gear failure. | Incorrect gear ratio while commanding 4th gear. | Improper gear selection depending on condition mode and manual lever position: see shift solenoid operation chart. Shift errors may also be due to other internal transaxle concerns (e.g., stuck valves, damaged friction material) (TCIL flashing, California only). | Pinpoint Test A |
| P0741 a |
TCC | Torque converter clutch engagement error. | The powertrain control module picked up an excessive amount of torque converter clutch slippage when converter was scheduled to be engaged during normal vehicle operation. | Failed OFF — converter never engages. Failed ON — engine runs rough/vehicle shudder, engine stalls in DRIVE (2nd, 3rd or 4th) at low idle speeds (TCIL flashing). |
Pinpoint Test C |
| P0743 b , P1767 b |
TCC | TCC solenoid circuit failure during on-board diagnostic. | TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM drive failure during on-board diagnostic. | Failed ON — engine runs rough/vehicle shudder,
engine stalls in DRIVE (2nd, 3rd or 4th) at low idle speeds. (Short
circuit). Failed OFF — converter never engages (Open circuit) (MIL on). |
Pinpoint Test C |
| P0750 b | SS1 | SS1 solenoid circuit failure. | Solenoid 1 circuit failed to provide voltage drop across solenoid. Circuit open or shorted or PCM drive failure during on-board diagnostic. | Improper gear selection depending on condition mode and manual lever position. See shift solenoid operation chart (MIL on). | Pinpoint Test A |
| P0751 a | SS1 | Shift Solenoid No. 1 functional failure. | Mechanical or hydraulic failure of the solenoid. | Improper gear selection depending on failure mode and manual lever position (MIL on). | Pinpoint Test A |
| P0755 b | SS2 | SS2 solenoid circuit failure. | Solenoid 2 circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM drive failure during on-board diagnostic. | Improper gear selection depending on condition mode and manual lever position. See shift solenoid operation chart (MIL on). | Pinpoint Test A |
| P0756 a | SS2 | Shift Solenoid No. 2 functional failure. | Mechanical or hydraulic failure of the solenoid. | Improper gear selection depending on failure mode and manual lever position (MIL on). | Pinpoint Test A |
| P0760 b | SS3 | SS3 solenoid circuit failure. | Solenoid 3 circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM drive circuit failure during on-board diagnostic. | Improper gear selection depending on condition mode and manual lever position. See shift solenoid operation chart (MIL on). | Pinpoint Test A |
| P0761 a | SS3 | Shift Solenoid No. 3 functional failure. | Mechanical or hydraulic failure of the solenoid. | Improper gear selection depending on failure mode and manual lever position (MIL on). | Pinpoint Test A |
| P1111 | SYSTEM | Pass. | No malfunction detected. | Malfunction not detected by powertrain control module. | PC/ED, SM |
| P1124 | TP | TP voltage high/low for on-board diagnostic. | TP was not in the correct position for on-board diagnostic. | Rerun at appropriate throttle position per application. | PC/ED |
| P1460 | A/C | A/C clutch cycling pressure switch error. | A/C or Defrost ON condition may result from A/C clutch being ON during on-board diagnostic. | Failed ON — EPC pressure slightly low with A/C
OFF. Failed OFF — EPC pressure slightly low with A/C ON. |
PC/ED |
| P1703 | BOO | Brake not actuated during on-board diagnostic.
BOO switch circuit failed. |
Brake not cycled during KOER. Brake ON/OFF circuit failure. |
Failed ON or not connected — torque converter
clutch will not engage at less than 1/3 throttle. Failed OFF — torque converter clutch will not disengage when brake is applied. |
PC/ED |
| P1705 | TR | TR not in PARK. | On-board diagnostic not run in PARK or incorrect voltage drops. | Rerun on-board diagnostic in PARK. | Pinpoint Test D |
| P1711 | TFT | TFT out of on-board diagnostic range. | Transaxle not at operating (25°F-240°F) temperature during on-board diagnostic. | Warm or cool vehicle to normal operating temperature. | Pinpoint Test B |
| P1741 a | TCC | Continuous slip ERROR. | Excessive variations in slip (engine speed surge) across the torque converter clutch detected. | Engine runs rough/vehicle shudders. You may feel a slight sensation of the engine running rough at road loads (approximately 35-40 mph in 3rd gear, 45-50 mph in 4th gear). | Pinpoint Test C |
| P1742 a | TCC | TCC Solenoid Failed ON (California ONLY). | TCC Solenoid has failed ON by electrical, mechanical or hydraulic concern. | Harsh shifts, may stall vehicle at low speeds. May activate MIL. | Pinpoint Test C |
| P1743 a | TCC | TCC Solenoid Failed ON (Calif only). | TCC solenoid has failed ON by electrical, mechanical or hydraulic concern. | Harsh shifts, may stall vehicle at low speeds. May flash TCIL. | C1 |
| P1744 | TCC | Excessive slip detected. (California ONLY). | Excessive slip detected during full TCC engagement. | Torque converter disengaged. EPC pressure at minimum. May activate MIL. | Pinpoint Test C |
| P1746 b | EPC | Open PCM output driver | Voltage through EPC solenoid is checked and compared to a voltage through solenoid after a time delay. An error will be noted if tolerance is exceeded. KOEO and continuous on-board diagnostic. | Open Circuit — Causes maximum EPC pressure, harsh engagements and shifts (TCIL flashing). | Pinpoint Test E |
| P1747 b , P1760 b |
EPC | EPC solenoid circuit failure, shorted circuit or output driver | Voltage through EPC solenoid is checked and compared to a voltage through solenoid after a time delay. An error will be noted if tolerance is exceeded. KOEO and continuous on-board diagnostic. | Short Circuit — Causes failsafe EPC pressure (maximum capacity). Harsh engagements and shifts (MIL on). | Pinpoint Test E |
| P1751 a | SS1 | Shift Solenoid No. 1 functional failure. | Mechanical or hydraulic failure of the solenoid. | Improper gear selection depending on failure mode and manual lever position (TCIL flashing). | Pinpoint Test A |
| P1756 a | SS2 | Shift Solenoid No. 2 functional failure. | Mechanical or hydraulic failure of the solenoid. | Improper gear selection depending on failure mode and manual lever position (TCIL flashing). | Pinpoint Test A |
| P1761 a | SS3 | Shift Solenoid No. 3 functional failure. | Mechanical or hydraulic failure of the solenoid. | Improper gear selection depending on failure mode and manual lever position (TCIL flashing). | Pinpoint Test A |
| P1780 | TCS | TCS did not change states. | TCS not cycled during self-test. TCS circuit open or shorted. | TCS not cycled during KOER self-test. No overdrive cancel when switch is cycled. | Rerun OBD test and cycle switch. Refer to PC/ED for diagnosis. |
| N/A | TCIL | TCIL circuit failure | TCIL circuit open or shorted. | Failed ON - Overdrive cancel mode on. No
flashing TCIL for EPC failure. Failed OFF - Overdrive cancel mode never indicated. No flashing TCIL for ECP failure. |
Refer to Section 07-05 . |
| P1783 | TFT | Transaxle overtemp condition indicated (300°F). | Transaxle fluid temperature exceeded (300°F). | Increase in EPC pressure during overtemp only. | Pinpoint Test B |
| P1700 | AX4N | Transaxle mechanical failure | Failure of the LOW OWC. NOTE: P1700 may also be set by a low transaxle fluid level. |
No 1st, 2nd and/or reverse gears, Code P0731, P0732 also. (Flash TCIL for California only.) | Refer to Diagnosis by Symptom Index. |
| P1112 | IAT | IAT sensor or circuit signal intermittent. | PCM has detected an intermittent signal. | Incorrect EPC pressure, either high or low which will result in harsh or soft shift. | Refer to PC/ED Manual for diagnosis. |
| P1117 | ECT | ECT sensor or circuit signal intermittent. | PCM has detected an intermittent signal. | Incorrect EPC pressure, either high or low which will result in harsh or soft shift. | Refer to PC/ED Manual for diagnosis. |