Powertrain, generic (extended)

P2469 Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 3)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2469 is logged when bank 2 probe number 3 pushes its input above the permitted ceiling. An unplugged connector, a broken wire or a burnt-out sensing element produces exactly that, as does a signal line shorted to a voltage source. Public calibrations exist only for the sister inputs: Ford's 2023 diesels flag anything above 2.66 V, and GM's 2025 diesel tables treat an open-like resistance (beyond 100 MΩ) or a digital value hotter than roughly 1,290 °C as failed after 19 of 25 samples and rate it Type A, so the MIL comes on in the first trip. CARB requires that out-of-range highs on emission inputs are detected. Measure the probe resistance cold and check the plug before buying a sensor. A too-low signal is P2468, an erratic one P246A.

Likely causes

Connector unplugged or wire broken (open circuit)
Sensing element burnt out
Signal line shorted to a voltage source

Symptoms

  • MIL on, often already in the first trip
  • Probe shows a maximum or invalid value
  • Regeneration or DEF dosing inhibited

Repair estimate

DifficultyMediumDIY possible
Parts and labour€20–350
Time0.3–1.5 h

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

Parts involved

egt sensor b2s3

Related codes

P2466P2467P2468P246AP242DP2476

References: law.cornell.edu, fordservicecontent.com, gsi.ext.gm.com.