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1997 Honda Passport EX 2WD Auto

1997 Honda Passport
Trim Info:
Rear Wheel Drive, 4 door, Special Purpose Vehicle
15 mpg city / 19 mpg hwy
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October 23, 2011, 3:25 pm

Amanda N
 

Question: how do I know when my transmission is bad?

we are buy this car, got it used last week. and it drive really great but will stall out on no where. we changed the throttle sensor because it was eating a lot of gas and was told that was the problem but our engine light keeps coming on and we got the codes but they don't make just make us more confused but we can't afford to take it to the shop. but we got codes P1515 P0463 P0507 P1125 P1295. Could you help us understand what to check now, we know nothen about cars thank you


October 24, 2011, 10:42 pm

Tyler O
Expert Mechanic

Clear the codes and see what comes back first. Check the throttle body and throttle position sensor. Make sure it's properly calibrated/set.


DTC P1515 Command - Actual TPS Correlation Error



Circuit Description

The throttle position (TP) sensor circuit provides a voltage signal relative to throttle position (blade angle). The throttle blade angle will vary about 8 % at closed throttle to about 92 % at wide open throttle (WOT).
The DC motor circuit provides a voltage signal relative to command throttle position (blade angle).
This DTC detects the difference between actual throttle position and command throttle position.

Conditions for Setting the DTC

The ignition is "ON" .
Throttle actuation mode is normal.
Command Throttle position - Actual Throttle position is more than + 5 % for 100 counts within test 1000 test samples (15.6 m sec) else Actual Throttle position is less than + 40 % and Command Throttle position - Actual Throttle position is more than - 5 % or Command Throttle position - Actual Throttle position is more than - 20 % for 150 failures within test 1000 test samples (15.6 m sec) .

Action Taken When the DTC Sets

The PCM will illuminate the malfunction indicator lamp (MIL) the first time the fault is detected.
The PCM calculates an air flow value based on idle air control valve position, throttle position, RPM and barometric pressure.
The PCM will store condition which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC

The PCM will turn the MIL "OFF" on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
A history DTC P1515 will clear after 40 consecutive trip cycle during which the warm up cycles have occurred without a fault.
DTC P1515 can be cleared using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
An intermittent may be caused by the following:

Poor connections.
Mis routed harness.
Rubbed through wire insulation.
Broken wire inside the insulation.

Check for the following conditions:

Poor connection at PCM-Inspect harness connectors for backed out terminals, improper mating, locks, improperly formed or damaged terminals, and poor terminal to wire connection.
Damaged harness-Inspect the wiring harness for damage. If the harness appears to be OK, observe the TP sensor 1, TP sensor 2 display on the Tech 2 while moving connectors and wiring harnesses related to the sensor.

A change in the display will indicate the location of the fault. If DTC P1515 cannot be duplicated, the information included in the Failure Records data can be useful in determined vehicle mileage since the DTC was last set.

If it is determined that the DTC occurs intermittently, performing the DTC P1515 Diagnostic Chart may isolate the cause of the fault.

DTC P0463 Fuel Level Sensor Circuit-High Voltage



Circuit Description
The fuel level sensor is an important input to powertrain control module (PCM) for the enhanced evaporative system diagnostic. Fuel level information is needed for the PCM to know the volume of fuel in the tank. The fuel level affects the rate of change in air pressure in the evaporative system. Several of the enhanced evaporative system diagnostic sub-tests are dependent upon correct fuel level information. The diagnostic will not run when the tank is greater than 85 % or less than 15 %, full. Fuel level DTCs should be diagnosed before other evaporative system DTCs because they can cause other DTCs to be set.

The sending unit is a float in the fuel tank which moves a wiper arm across a variable resistor. High fuel level causes low resistance in the sending unit. This is recognized by the PCM because the circuit operates at a corresponding high voltage. When the circuit is continuously shorted to a voltage source greater than a specified value, or when the 5 volt signal is shorted to ground, DTC P0463 is set.

Conditions for Setting the DTC

Fuel tank level "slosh test" is completed.
Fuel tank level "main test" is completed.
Fuel tank level data is valid.
Fuel tank level signal is greater than a specified value.
There are 100 test failures within a 200-test sample.

Action Taken When the DTC Sets

The PCM will ON the MIL after second trip with detected the fault.
The PCM will store conditions which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the DTC

The PCM will turn the MIL "OFF" after three consecutive trips without a fault condition present. A history DTC will be cleared if no fault conditions have been detected for 40 warm-up cycles (engine coolant temperature has risen 4 °C (40 °F) from the start-up ECT, and ECT exceeds 71 °C (160 °F) during that same ignition cycle) or the scan tool clearing function has been used.
DTC P0463 can be cleared by using the scan tool "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids

Damaged harness-Inspect the wiring harness for damage. If the harness appears to be OK, observe the fuel level display on the scan tool while moving connectors and wiring harnesses related to the sensor. A change in the display will indicate the location of the fault.

DTC P0507 Idle Air Control System High RPM



Circuit Description
The powertrain control module (PCM) controls engine speed by adjusting the position of the throttle control valve (DC motor). The throttle motor is a DC motor driven by one coil. The PCM applies current to the DC motor coil in position (%) to adjustment the throttle valve into a passage in the throttle body to air flow. This method allows highly accurate control of engine speed and quick response to changes in engine load.

If the PCM detects a condition where too high of an idle speed is present and the PCM is unable to adjust idle speed by increasing the throttle position, DTC P0507 will set, indicating a problem with the idle control system.

Conditions for Setting the DTC

No TPS, VSS, ECT, EGR, MAF, MAP, IAT, low voltage, fuel system, canister purge, injector control or ignition control DTCs are set.
Barometric pressure is above 75 kPa .
Canister purge duty cycle is above 10 %.
Engine running time is more than 125 seconds .
Vehicle speed is less than 1 mph .
Engine coolant temperature (ECT) is above 50 °C (122 °F) .
Ignition voltage is between 9.5 volts and 16.7 volts .
The throttle is closed.
EVAP purge duty cycle is more than 10 %.
All conditions are met for 10 seconds .
Engine speed is more than 100 - 200 RPM higher than desired idle based upon coolant temperature.
Barometric pressure is more than 74.5 kPa .

Action Taken When the DTC Sets

The PCM will illuminate the malfunction indicator lamp (MIL) after the second consecutive trip in which the fault is detected.
The PCM will store conditions which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC

The PCM will turn the MIL "OFF" on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
A history DTC P0507 will clear after 40 consecutive warm-up cycles have occurred without a fault.
DTC P0507 can be cleared by using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
Check for the following conditions:

Poor connection at PCM or throttle DC motor - Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal-to-wire connection.
Damaged harness - Inspect the wiring harness for damage.
Vacuum leak - Check for a condition that causes a vacuum leak, such as disconnected or damaged hoses, leaks at EGR valve and EGR pipe to intake manifold, leak at the throttle body, a faulty or incorrectly installed PCV valve, leaks at the intake manifold, etc.
Throttle body - Check for sticking throttle plate. Also inspect the air passage for deposits or objects which will not allow the ETC position to fully extend or properly seat.

If DTC P0507 cannot be duplicated, reviewing the Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.

DTC P1125 ETC (Electric throttle control) Limit Performance Mode



Circuit Description

The acceleration position (AP1) sensor circuit provides a voltage signal relative to acceleration pedal angle. The acceleration pedal angle will vary about 13 % at idle position to about 87 % at wide open throttle (WOT).

This code detects if the system is in Limit Performance Mode (Fail safe Mode) and Multiple DTCs performance Mode.

Conditions for Setting the DTC

The Ignition is "ON" .
Limit Performance Mode is active. (Fail safe Mode)

Action Taken When the DTC Sets

The PCM will illuminate the malfunction indicator lamp (MIL) the first time the fault is detected.
The PCM will store condition which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC

The PCM will turn the MIL "OFF" on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
A history DTC P1125 will clear after 40 consecutive trip cycle during which the warm up cycles have occurred without a fault.
DTC P1125 can be cleared using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
An intermittent may be caused by the following:

Poor connections.
Mis routed harness.
Rubbed through wire insulation.
Broken wire inside the insulation.

Check for the following conditions:

Poor connection at PCM-Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
Damaged harness-Inspect the wiring harness for damage. If the harness appears to be OK, observe the APP sensor 1, APP sensor 2, APP sensor 3 display on the Tech 2 While moving connectors and wiring harnesses related to the sensor.

A change in the display will indicate the location of the fault.

If DTC P1125 cannot be duplicated,the information included in the Failure Records data can be useful in determined vehicle mileage since the DTC was last set.

If it is determined that the DTC occurs intermittently,performing the DTC P1125 Diagnostic Chart may isolate the cause of the fault.

DTC P1295 ETC Power Management Mode



Circuit Description

The throttle position (TP) sensor circuit provides a voltage signal relative to throttle position (blade angle). The throttle blade angle will vary about 8 % at closed throttle to about 92 % at wide open throttle (WOT).
The DC motor circuit provides a voltage signal relative to command throttle position (blade angle).
The mass air flow (MAF) sensor measures the amount of air which passes through it into the engine during a given time. The powertrain Control Module (PCM) uses the mass air flow information to monitor engine operating conditions for fuel delivery calculations.

A large quantity of air entering the engine indicates an acceleration or high load situation, while a small quantity or air indicates deceleration or idle.

The MAF sensor produces a frequency signal which can be monitored using a Tech 2. The frequency will vary within a range of around 4 to 7 g/s at idle to around 25 to 40 g/s at maximum engine load.

This DTC detects that if the system is in Power Management Mode.(Fail safe Mode)

Conditions for Setting the DTC

The ignition is "ON" .
Power Management Mode is active. (Fail safe Mode)

Action Taken When the DTC Sets

The PCM will illuminate the malfunction indicator lamp (MIL) the first time the fault is detected.
The PCM calculates an air flow value based on idle air control valve position, throttle position, RPM and barometric pressure
The PCM will store condition which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC

The PCM will turn the MIL "OFF" on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
A history DTC P1295 will clear after 40 consecutive trip cycle during which the warm up cycles have occurred without a fault.
DTC P1295 can be cleared using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
An intermittent may be caused by the following:

Poor connections.
Mis routed harness.
Rubbed through wire insulation.
Broken wire inside the insulation.

Check for the following conditions:

Poor connection at PCM-Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals,and poor terminal to wire connection.
Damaged harness-Inspect the wiring harness for damage. If the harness appears to be OK, observe the TP sensor 1, TP sensor 2 display on the Tech 2 while moving connectors and wiring harnesses related to the sensor.

A change in the display will indicate the location of the fault. If DTC P1295 cannot be duplicated, the information included in the Failure Records data can be useful in determined vehicle mileage since the DTC was last set.

If it is determined that the DTC occurs intermittently, performing the DTC P1295 Diagnostic Chart may isolate the cause of the fault.


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