Powertrain, generic · Transmission

P07C0 Input/Turbine Shaft Speed Sensor A Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

These low/high codes are a purely electrical check of the sensor's signal voltage at the module and run even with the vehicle at rest – unlike the circuit, range, no-signal and intermittent codes, which evaluate speed while driving. Low means a short to ground, high a short to supply or, depending on the circuit, an open. GM's transmission modules from 2019 (9-speed, 10-speed) flag below 0.25 V or above 4.75 V – a short of under 0.5 Ω – for more than 0.05 s with the system above 10 V for 5 s, after one trip. P07C0 is the high side: a short of the input sensor signal to supply. GM's 2019 nine-speed bulletin lists it together with P07BF and P0717 and traces it to an open inside the sensor.

Likely causes

Signal wire shorted to supply
Open circuit or broken wire inside the sensor
Corroded connector
Module input faulty

Symptoms

  • Check engine light (GM after one trip)
  • Limp mode, harsh shifts, no converter lock-up
  • Adaption frozen

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€120–600
Time1–4 h

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

Parts involved

input speed sensorsensor wiringtransmission control module

Related codes

P07BFP0715P0716P0717P077DP0700

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov.