B1258
Low Severity (Level 2)Solar Radiation Sensor Circuit Failure
B1258 usually means solar Radiation Sensor Circuit Failure.
Can you still drive with B1258?
⚠️Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.
Typical repair cost: $30 – $200
Severity Level 2 — Low
This code indicates a minor issue that is unlikely to cause immediate driveability problems. You can typically continue driving but should have the vehicle inspected at your earliest convenience.
Common Symptoms
- Warning light or message on dashboard related to the intake air temperature sensor
- Engine not functioning as expected
- Diagnostic trouble code (DTC) stored in module memory
- Fault may be intermittent — code may clear itself and reappear
- Reduced vehicle functionality related to the intake air temperature sensor
Possible Causes
- Failed IAT sensor — internal fault from age, heat cycling, and vibration
- Damaged wiring or corroded connector in the intake air temperature sensor circuit
- Blown fuse for the intake air temperature sensor circuit — check before replacing components
- Faulty control module driving the IAT sensor
- Loose or corroded ground point shared by the intake air temperature sensor
Common Fixes
- Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($30-96 at shop, free at auto parts store for basic scan)
- Visually inspect the intake air temperature sensor wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $141 diagnostic fee at shop)
- Replace IAT sensor if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($30-200)
- Check and replace any blown fuses in the intake air temperature sensor fuse circuit — if fuse blows again, there's still a short that needs to be found ($5-13 for fuses)
- Perform a wiggle test on the intake air temperature sensor wiring harness while monitoring live data — see if the fault returns when you move the harness at different points ($0-106 diagnostic labor)
Estimated Repair Cost
These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.
Frequently Asked Questions
What does B1258 mean?
B1258 stands for "Solar Radiation Sensor Circuit Failure". B1258 usually means solar Radiation Sensor Circuit Failure.
Can you drive with B1258?
Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.
How much does it cost to fix B1258?
Repair costs for B1258 typically range from $30 to $200, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($30-96 at shop, free at auto parts store for basic scan); Visually inspect the intake air temperature sensor wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $141 diagnostic fee at shop); Replace IAT sensor if testing confirms it has failed — use OEM quality, avoid the cheapest no-name aftermarket parts that fail in a year ($30-200).
Will B1258 clear itself?
Explore Repair Costs
Related OBD-II Codes
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