Powertrain, generic (extended)

P2AB7 Wastegate Position Sensor A Circuit

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

P2AB7 is the general circuit fault for the position sensor on wastegate A, found on engines whose wastegate is moved by an electric motor rather than a vacuum can. Turbo A is the first one in the exhaust flow on series layouts or the bank 1 unit on parallel layouts. Ford names P2AB7 in SSM 50485 for 2019-22 2.0L/2.3L EcoBoost models (Edge, Nautilus, Escape, Corsair, Bronco Sport), where a failed actuator, a lost e-clip or a bent rod led to a lack of power, and TSB 22-2357 cures false settings on 2021-22 F-150 2.7L trucks with new PCM software. Ford publishes no limit for this general code, only for the low and high variants P2AB8/P2AB9. GM reports a broken SENT link to the same sensor as U0644 instead. Bank 2 is P2ABA.

Likely causes

Electric wastegate actuator failed, e-clip missing or actuator rod damaged (sensor sits in the actuator)

Chafed harness or loose connector near the hot turbocharger

PCM calibration that sets the code falsely (reflash available for some models)

Symptoms

Check engine light on
Noticeable lack of power, boost limited
Often stored together with P0299 or the stuck wastegate codes P25B3/P25B4

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€0–900

Time0.5–3 h

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

Parts involved

wastegate position sensor awiring harnessecm

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