Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1998TAURUS V6-3.0L DOHC VIN SREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE TESTS AND ASSOCIATED PROCEDURESAX4SNON-TRANSMISSION DTCS AND SYMPTOMSTHROTTLE POSITION (TP) SENSOR
1998 Ford Taurus V6-3.0L DOHC VIN S
Throttle Position (TP) Sensor
1998 Ford Taurus V6-3.0L DOHC VIN SSECTION Throttle Position (TP) Sensor
DESCRIPTION
Is a potentiometer mounted on the throttle body. The throttle position sensor detects the position of the throttle plate and sends this information to the powertrain control module as a varying voltage signal. If a malfunction occurs in the TP sensor circuit, the powertrain control module will recognize that the TP sensor signal is out of specification. The powertrain control module will then operate the AX4S transaxle in a high capacity mode to prevent transaxle damage. The powertrain control module also uses this signal for shift scheduling, EPC pressure control, torque converter clutch control.
SYMPTOMS
Harsh engagements, firm shift feel, abnormal shift schedule, torque converter clutch does not engage, torque converter clutch cycling.
DTCs
P0122, P0123, P1120
Is a potentiometer mounted on the throttle body. The throttle position sensor detects the position of the throttle plate and sends this information to the powertrain control module as a varying voltage signal. If a malfunction occurs in the TP sensor circuit, the powertrain control module will recognize that the TP sensor signal is out of specification. The powertrain control module will then operate the AX4S transaxle in a high capacity mode to prevent transaxle damage. The powertrain control module also uses this signal for shift scheduling, EPC pressure control, torque converter clutch control.
SYMPTOMS
Harsh engagements, firm shift feel, abnormal shift schedule, torque converter clutch does not engage, torque converter clutch cycling.
DTCs
P0122, P0123, P1120
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.