B2426
Low Severity (Level 2)Passenger Solar Radiation Sensor Circuit Open
B2426 usually means passenger Solar Radiation Sensor Circuit Open.
Can you still drive with B2426?
⚠️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
- Engine not working — no response when activated
- Engine working intermittently, then stopping completely
- Infinite resistance in the intake air temperature sensor circuit — broken wire or disconnected connector
- Fault may be intermittent — code may clear itself and reappear
- Reduced vehicle functionality related to the intake air temperature sensor
Possible Causes
- Broken wire or connector pin in the intake air temperature sensor harness — common at flex points like door jambs or where wiring moves
- Disconnected or loose electrical connector — may have been bumped during other repairs
- Failed IAT sensor — internal open circuit from age, heat cycling, or vibration
- Corrosion completely severing a wire or connector terminal — green crust on copper wiring
- Wiring harness damage from rodent chewing — look for nesting material near the engine or under dash
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 ($49-128 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, $82 diagnostic fee at shop)
- Trace the intake air temperature sensor wiring from connector to connector with a multimeter set to continuity/resistance mode — find and repair the break in the circuit ($88-318 labor for diagnosis and repair)
- Check and reseat all connectors in the intake air temperature sensor circuit — disconnect, inspect pins, clean with electrical contact cleaner, apply dielectric grease, and reconnect firmly ($18 DIY or $63 shop minimum)
- If IAT sensor has failed internally (open circuit inside), replace it — don't try to repair sealed components ($30-200)
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 B2426 mean?
B2426 stands for "Passenger Solar Radiation Sensor Circuit Open". B2426 usually means passenger Solar Radiation Sensor Circuit Open.
Can you drive with B2426?
Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.
How much does it cost to fix B2426?
Repair costs for B2426 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 ($49-128 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, $82 diagnostic fee at shop); Trace the intake air temperature sensor wiring from connector to connector with a multimeter set to continuity/resistance mode — find and repair the break in the circuit ($88-318 labor for diagnosis and repair).
Will B2426 clear itself?
Explore Repair Costs
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