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

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.

Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.

Symptoms

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

Most likely causes

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

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the soot load and differential pressure with a scanner
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Check the differential pressure sensor's hoses
4. Check the temperatures before and after the filter
5. Fix any fuel injection or EGR codes before regenerating
6. Perform a regeneration while driving or at a repair shop when the diagnosis allows it

Good to know

• Repair difficulty: medium
• It affects emissions.

What each character of P2469 means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• 4: Emissions
• 69: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2469?

If the light is on steadily, take a highway drive or go to a repair shop soon. If the car is in limp mode or the light is flashing, do not push the engine.

What causes code P2469?

The most common causes are: connector unplugged or wire broken (open circuit); sensing element burnt out; signal line shorted to a voltage source.

Related codes

• P2466Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 3)
• P2467Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 3)
• P2468Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 3)
• P246AExhaust Gas Temperature Sensor Circuit Intermittent/Erratic (Bank 2 Sensor 3)
• P242DExhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 3)
• P2476Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 4)

Sources

• law.cornell.edu: 13 CCR 1968.2
• fordservicecontent.com: obd summary diesel 2023
• gsi.ext.gm.com: 25OBDG04A

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.