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.
2005 Ford Econoline E150, Van Cargo, 5.4 LFACTORY OEM SERVICE PROCEDURE
DTC P0068: Throttle Position (TP) Sensor Inconsistent with Mass Air Flow (MAF) Sensor
P0068 - THROTTLE POSITION (TP) SENSOR INCONSISTENT WITH MASS AIR FLOW (MAF) SENSOR
| Description: | The powertrain control module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during a key on, engine running (KOER) self-test, the comparison of the TP sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a DTC is stored in continuous memory. | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | Drive the vehicle and exercise the throttle and the TP sensor in all gears. A TP PID (TP V PID) less than 4.82% (0.24 volt) with a LOAD PID greater than 55%, or a TP PID (TP V PID) greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | - | GO to DV: Throttle Body Assembly ETC STEP DV12. | GO to DV: Throttle Body Assembly ETC STEP DV12. |
| All others | - | GO to DH: Throttle Position (TP) Sensor STEP DH16. | GO to DH: Throttle Position (TP) Sensor STEP DH16. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.