Diesel Trouble Codes

P2262 — Turbocharger Boost Pressure Not Detected — 6.7 Cummins (SCR / DEF)

Diagnostic reference for 6.7 Cummins SCR/DEF 2013–present. Turbo is Holset HE300VG VGT with electric actuator + integrated position sensor; no…

Updated October 15, 2026

What it means

Engine control module detects turbocharger boost pressure lower than expected or not detected. On this platform the VGT uses an electric actuator with integrated position sensor and MAP-based load control; no wastegate/vacuum/boost solenoid.12

Most likely causes

  1. VGT electric actuator / position sensor fault or learned travel out of range — Actuator or integrated position sensor malfunction, wiring/connector corrosion, or learned travel exceeded. Platform uses HE300VG VGT with electric actuator + position sensor; no wastegate/vacuum/boost solenoid. Related codes include P226C for position learning limit.13
  2. Boost leak or intake restriction — Post-turbo boost leak, cracked intercooler piping, loose clamps, damaged intercooler, or restricted air filter/intake. MAP-based load control expects boost to match commanded VGT position.2
  3. Exhaust restriction / turbine side blockage — Clogged DPF/SCR, collapsed exhaust, or turbine housing fouling reduces turbine drive and boost. Emissions system includes DOC/DPF and SCR/DEF on this platform.2
  4. MAP sensor or circuit issue — Faulty manifold absolute pressure sensor or wiring causing incorrect boost reporting. Air metering is MAP-based; MAF is for EGR/emissions, not primary fueling.2
  5. VGT vane sticking / carbon buildup — VGT vanes stick due to soot/carbon, causing inability to build commanded boost. Typical on HE300VG VGT with electric actuator.13

How to diagnose

  1. Verify freeze frame and confirm P2262 with no accompanying overboost/underboost codes. Check for related VGT codes P226C, P0045, P0299, P0234.
  2. Inspect intake and boost plumbing for leaks, loose clamps, cracked pipes, damaged intercooler. Pressure-test boost circuit if available.
  3. Inspect air filter and intake restriction; check grid heater operation for intake restriction on cold start. Platform has intake-air grid heater, no glow plugs.
  4. Check exhaust backpressure and DPF/SCR condition; excessive restriction reduces turbine drive. Emissions system includes DOC/DPF and SCR/DEF.
  5. Inspect VGT actuator connector and wiring for corrosion/damage; check actuator power/ground and CAN signals per service info. Turbo is HE300VG VGT with electric actuator + integrated position sensor; no wastegate/vacuum/boost solenoid.
  6. Command VGT actuator through scan tool and observe actual vs desired position; check learned travel limits. P226C indicates position exceeded learning limit.
  7. Test MAP sensor voltage and compare to actual boost with mechanical gauge; verify sensor and reference circuits. Air metering is MAP-based.
  8. Inspect turbocharger for shaft play, oil contamination, and vane movement; look for carbon buildup causing vane sticking.

Common mistake to avoid

Skipping the VGT actuator calibration. The 6.7 Cummins Holset actuator has to be relearned with a scan tool after it is replaced or disconnected, or boost control will stay off. Source: OBDAdvisor — diesel limp mode diagnosis.

Parts and tools you may need

Tools you’ll need

Rough cost and difficulty

Likely repairPartsShop laborWho usually does it
MAP/boost pressure sensor$40–$2000.3–1 hrsEasy DIY
Intercooler boot, clamp or pipe repair$20–$2000.5–2 hrsEasy DIY
DPF professional cleaning (bake and blow)$300–$7001–3 hrsShop
Electronic VGT actuator (needs calibration)$500–$1,4001–2 hrsDIY with tools and a manual

Typical US independent-shop figures; labor runs about $120–$180 per hour (dealers charge more). Confirm the diagnosis before buying parts.

When to see a pro

If bi-directional VGT control is unavailable, if turbocharger disassembly is required, or if exhaust/DPF/SCR service is needed. High-pressure fuel system work is safety-critical; do not service high-pressure fuel lines. Seek a qualified diesel technician.

Check for recalls

Recalls are tied to your truck’s VIN, so check yours directly: enter the VIN at NHTSA’s recall lookup. Open safety recalls are repaired free at a dealer.

Sources

  1. Curated DTC seed — 6.7 Cummins (SCR / DEF) (curated) ↩︎ ↩︎ ↩︎

  2. Curated DTC seed — 6.7 Cummins (SCR / DEF) (curated) ↩︎ ↩︎ ↩︎ ↩︎

  3. Curated DTC seed — 6.7 Cummins (SCR / DEF) (curated) ↩︎ ↩︎

Repair videos: P2262 on the 6.7 Cummins '13+

Third-party videos, not ours — picked for this engine. Confirm anything against the factory service information for your truck.

City Diesel Cummins 6.7 Turbo Actuator Codes And How To Fix It ( No Calibration Needed ) — DDP Motorsports · 93K views

6.7 Cummins Turbo Issues - STS (Stuck Turbo Syndrome) — DieselPowerSource · 43K views

Dodge Ram Cummins 6.7L VGT Turbo Actuator Code - Common Problems Causing VGT Issues — Highway and Heavy Parts · 35K views