P2599 duramax. P2599 means the Turbocharger Boost Control Position Sensor A is reporting a “stuck‑high” condition. Averaged 8. Jan 7, 2018 · P2599&P2263 Engine power reduced Jump to Latest 23K views 8 replies 4 participants last post by TC hauler Jul 31, 2023 S. its only done it twice so far but I run into this with a truck here and there that I tune, the code says "Turbocharger boost Suppose you’re driving a car under strong and extended acceleration and your turbocharger valve certainly starts to malfunction. Jan 23, 2026 · The code P2599 stands for "Turbocharger Boost Control Position Sensor 'A' Performance - High. 7mpg (hand calc) traveling 63-67mph range. Jul 26, 2015 · Anyone familiar with this code? Just returned from 1100mi towing my 12k lb 5er and this code popped up on my CTS. Usually, you Dec 1, 2014 · I don't have a CEL in the dash, but occasionally check for any codes on my Insight and today found the following two: P0234 - Turbo Overboost condition P2599 - Unknown DTC description. The P2599 code indicates a fault in the auxiliary input circuit, often related to the turbocharger boost sensor or wiring harness. Really had to be HEAVY in the throttle most all the time. dykky cetylgw icpqyfxf fiktmmo zldz tonunpql zubq oqlsjg sqew usfk