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C0083 — Tire Pressure Monitor Malfunction Indicator

Generic OBD-II · all makesChassis

The C0083 code indicates a malfunction in the circuit responsible for operating the Tire Pressure Monitoring System (TPMS) indicator light. The vehicle's control module has detected that the warning lamp is not functioning as expected, preventing the system from alerting the driver to pressure issues.

Symptoms

What causes it — most likely first

1. Faulty Indicator Lamp

A burnt-out bulb or failed LED within the instrument cluster prevents the circuit from completing.

2. Wiring Circuit Failure

Open circuits, shorted wires, or corroded connectors between the TPMS module and the instrument cluster.

3. Corroded Module Connectors

Moisture or debris in the TPMS control module connector causing intermittent signal loss.

4. Faulty TPMS Control Module

Internal hardware failure within the TPMS module preventing it from triggering the indicator light.

5. Control Module Software Error

A glitch or outdated firmware in the BCM or PCM affecting the indicator output.

How it's diagnosed

  1. Perform a bulb check by cycling the ignition to see if the TPMS light illuminates during the self-test.
  2. Inspect the instrument cluster for known failure patterns or signs of electrical damage.
  3. Use a multimeter to test for continuity and voltage on the wiring harness between the TPMS module and the cluster.
  4. Inspect the TPMS module and BCM connectors for corrosion, bent pins, or loose connections.
  5. Use a diagnostic scan tool to check for additional sensor-specific faults that may be triggering the indicator malfunction.

Code facts & related codes

SystemChassis
StandardizationSAE generic — identical on every make
Related codesC0081 — Abs Malfunction IndicatorC0082 — Brake System Malfunction IndicatorC0084 — Traction Active IndicatorC0085 — Traction Disable IndicatorC0086 — Vehicle Dynamics IndicatorC0089 — Tcs Disable Switch

Frequently asked

Does this code mean my tires are low on air?

No. C0083 refers to a failure in the system's ability to light up the warning lamp, not necessarily a low-pressure condition in the tires.

Should I replace the PCM or BCM to fix this code?

This is rarely the correct fix. The issue is almost always a failed LED in the cluster or a wiring fault; replacing the computer is usually unnecessary and incorrect.

Will replacing a tire pressure sensor fix C0083?

Generally no, as C0083 focuses on the indicator circuit. Replacing a sensor may fix a 'low pressure' warning, but it will not fix a 'malfunction indicator' circuit fault.