Acura P1790: A/T Throttle Position Sensor Circuit Malfunction

What Does The Acura P1790 Code Mean?

This code indicates the condition that key on or engine running; and the PCM detected an unexpected voltage condition on the TP sensor signal circuit to the TCM.

Note:

• The lockup clutch does not engage when this code is set.
• The D4 lamp on the dash will flash 3 times if this code is set

What Are The Potential Causes Of The Acura P1790 Code?

Below are some potential causes of this DTC:

• TP sensor signal circuit to the TCM is open
• TP sensor signal circuit to the TCM is shorted to ground
• TP sensor signal circuit to the TCM is shorted to VREF
• TP sensor connector is disconnected or damaged
• TCM or PCM has failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Acura Engine Control Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Acura P1790, DTCDECODE.