P2483: Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 5)

P2483 is the plausibility test for the fifth bank 1 exhaust probe: the circuit is electrically fine, but the reading does not behave like a real exhaust temperature. GM's 2025 diesel tables describe the check in detail. After the engine has been off for more than 10,800 s (three hours), the value frozen at key-on serves as reference; if the probe then fails to rise by the amount a calibrated map expects while the engine runs, the ECM concludes it is stuck or no longer in the gas stream. It is a Type B fault and waits until the electrical codes P2481, P2482 and P2484 are clear. Hino also issued workshop-manual corrections for P2483 on its 2018–2019 J08E trucks. A probe pulled out of its boss after work on the exhaust is a classic cause.

Bank 1 is the side of the engine with cylinder 1. Inline engines only have this bank.

Symptoms

• Warning lamp after two trips
• Probe 5 barely changes while the other probes heat up

Most likely causes

• Probe not fully seated in its boss after exhaust work
• Probe output stuck or responding too slowly
• Heavily sooted probe tip insulating the element

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. Compare the reading with other engine data while varying the engine speed.
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 P2483 means

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

Frequently asked questions

Can I keep driving with code P2483?

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 P2483?

The most common causes are: probe not fully seated in its boss after exhaust work; probe output stuck or responding too slowly; heavily sooted probe tip insulating the element.

Related codes

• P2480Exhaust Gas Temperature Sensor Circuit/Open (Bank 1 Sensor 5)
• P2481Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 5)
• P2482Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 5)
• P2484Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic (Bank 1 Sensor 5)
• P2488Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 5)

Sources

• gsi.ext.gm.com: 25OBDG04A
• static.nhtsa.gov: MC 10153283 9999
• law.cornell.edu: 13 CCR 1968.2

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.