A repeat heater code followed a loose, heat-discolored connector terminal rather than another failed sensor.
Why this matters
The value of this case is the order of evidence and the verification step. The same symptom on another vehicle may have a different cause.
Evidence to capture first
- Heater current
- Supply and control voltage
- Terminal tension
- Heat and water damage
A disciplined path
- Identify the exact circuit
- Inspect without spreading terminals
- Replace the approved terminal and seal
- Verify current and monitor operation
Decision point
A documented terminal repair restored the circuit and prevented an unnecessary sensor replacement.
Source desk
Use current model-specific service information for specifications, connector locations, disabling procedures, and tightening values. The following public resources support the broader safety or system context used in this guide.
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