Network, generic

U0607 Lost Communication With Throttle/Pedal Position Sensor/Switch B

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

Position sensor B is the redundant second track of a throttle or pedal unit. On SENT throttle bodies both tracks often share one sensor chip and even one frame (the dual throttle format A.1 of J2716), so a broken line usually drops A and B together. U0607 alone points to a fault confined to the second channel or its decoding. GM's 2025 tables (25OBDG03A) assign it to throttle position sensor 2 with the same SENT checks as sensor 1, Type A. On a GM engine with one throttle per bank (documents 23OBDG07 and 24OBDG07) it pairs with U0606 on bank 1 when the line stays silent or pulse or calibration lengths fall outside the window for 0.13 s. Ford's SENT summaries skip this code. With one track left, plausibility checks are gone, so power is limited.

Likely causes

Second sensor channel inside the throttle or pedal unit failed

Damaged SENT line, supply or ground (often sets U0606 as well)

Spread or corroded terminal at the sensor connector

Engine controller software decoding the second channel wrongly

Symptoms

Check engine light, on GM in the first trip
Limited power because the redundancy check is lost

Repair estimate

DifficultyMediumDIY possible

Parts and labour€50–600

Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

throttle pedal sensor bsensor wiring

References: gsi.ext.gm.com, gsi.ext.gm.com, nxp.com.