Powertrain, generic (extended)

P2867 Shift Fork E Position Circuit Intermittent

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2867 reports that the fork E sensor signal is present but unsteady. GM's Corvette TCM times each cycle of the digital rod 5 signal and sets the code, Type A, when the frequency drops below 1500 Hz or rises above 2500 Hz for at least 150 ms, with the same voltage and cranking exclusions as the low and high tests. So the sensor keeps pulsing, just not at a rate the module accepts. Such dropouts are usually caused by a loose pin, a chafed shield picking up interference, or a sensor beginning to fail with heat. The Mercedes 8G-DCT diagnosis list names fork E sensor faults but not this number. Unlike P2865 and P2866, the fault may come and go, so a stored code without symptoms is common at first.

Likely causes

Loose or fretted terminal in the fork E sensor circuit
Damaged shielding letting electrical noise into the signal
Sensor electronics failing intermittently when hot

Symptoms

  • Sporadic warning, sometimes without noticeable effect
  • Occasional lockout of fork E gears

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–2,500
Time0.5–8 h

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

Parts involved

shift fork eshift fork position sensor ewiring harness

Related codes

P2863P2865P2866P2864P2844

References: gsi.ext.gm.com, static.nhtsa.gov, law.cornell.edu.