Diesel Trouble Codes

P2470 — Exhaust Gas Temperature Sensor Circuit Range/Performance (bank 1 sensor 3) (6.7 Power Stroke)

Diagnostic reference for P2470 on 6.7 Powerstroke.

Updated September 1, 2026

What it means

Exhaust gas temperature sensor reads implausibly. Typical on this platform: EGT sensor failure or wiring; can disrupt regeneration.1

Most likely causes

  1. EGT sensor (bank 1 sensor 3) failure or drift — Sensor element degraded or out of range; signal implausible versus expected exhaust temperature.1
  2. Wiring/connector fault to EGT sensor — Chafed, corroded, or loose harness/connector causing intermittent or out-of-range signal.1
  3. Aftertreatment-related conditions affecting temperature readings — Regeneration disruption can be linked to EGT sensor faults on this platform.1

How to diagnose

  1. Verify code and freeze-frame data; confirm P2470 is active and note engine load, rpm, and temperature at set.
  2. Inspect EGT sensor (bank 1 sensor 3) connector and wiring for corrosion, chafing, moisture, or loose pins.
  3. Check related aftertreatment codes that can influence regeneration; e.g., DPF pressure sensor range/performance issues.
  4. Review recent regeneration history and frequency; frequent regens can stress temperature sensors.
  5. Compare EGT readings from other sensors (if available) to assess plausibility of bank 1 sensor 3.
  6. Inspect aftertreatment components for conditions that alter exhaust temperature profiles, such as DPF restriction or exhaust leaks.
  7. If wiring and connections test good, evaluate sensor performance against specification using a scan tool during controlled operating conditions.

Parts and tools you may need

Rough cost and difficulty

Parts and labor vary by region and shop; obtain quotes before proceeding.

When to see a pro

If diagnosis indicates internal aftertreatment faults, wiring repairs in high-heat zones, or persistent implausible readings after basic checks, have a qualified diesel technician evaluate the vehicle. Do not attempt step-by-step repair of high-pressure fuel or exhaust aftertreatment systems. High-temperature exhaust components pose burn and fire risk.

Sources

  1. Curated DTC seed — 6.7 Powerstroke (curated) ↩︎ ↩︎ ↩︎ ↩︎

Watch a repair

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

6.7 Powerstroke Low Power - Low Boost - Engine Light FIX — DanielJaegerFilms