B2273 Code - Ignition 2 Monitor Malfunction
Quick Answer
This Diagnostic Trouble Code (DTC) is output when there is a problem in the Ignition 2 (IG2) output circuit, which is from the inside of the Main Body ECU to the Ignition 2 (IG2) Relay. Common causes include Faulty Ignition 2 (IG2) Relay, Ignition 2 (IG2) Relay harness is open or shorted, Ignition 2 (IG2) Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2273 indicates Ignition 2 Monitor Malfunction.
- Common causes
- Common causes include Faulty Ignition 2 (IG2) Relay, Ignition 2 (IG2) Relay harness is open or shorted, Ignition 2 (IG2) Relay circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2273 Description
What are the Possible Causes of the DTC B2273?
- Faulty Ignition 2 (IG2) Relay
- Ignition 2 (IG2) Relay harness is open or shorted
- Ignition 2 (IG2) Relay circuit poor electrical connection
- Faulty Main Body ECU
How to Fix the DTC B2273?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2273 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- B2273 Lexus — Ignition 2 Monitor Malfunction
- B2273 Scion — Ignition 2 Monitor Malfunction
- B2273 Toyota — Ignition 2 Monitor Malfunction
Frequently Asked Questions about B2273 Code
1. What does the OBDII code B2273 mean?
B2273 indicates an "Ignition 2 Monitor Malfunction," meaning the vehicle's onboard control module has detected an issue with the secondary ignition circuit.
2. What are the common symptoms of code B2273?
Symptoms may include difficulty starting the vehicle, intermittent stalling, dashboard warning lights such as the check engine light, and irregular ignition system performance.
3. What causes the B2273 code to appear?
Common causes include a faulty ignition switch, damaged wiring or connectors in the ignition circuit, a malfunctioning relay, or a failing PCM (Powertrain Control Module).
4. How do I diagnose the B2273 code?
Start by inspecting the ignition switch, wiring, and connectors for damage or corrosion. Use a scan tool to monitor live data and test the ignition system for proper voltage and continuity.
5. Can a dead battery trigger the B2273 code?
While a dead battery alone may not trigger this code, low voltage or power supply issues can cause malfunctions in the ignition circuit, leading to this error.
6. Is it safe to drive with the B2273 code?
It’s not recommended to drive with this code active, as it can lead to stalling or unpredictable ignition performance, which may compromise safety.
7. How can I fix the B2273 code?
Repairs may include replacing a faulty ignition switch, repairing damaged wiring or connectors, replacing a defective relay, or reprogramming or replacing the PCM if needed.
8. How much does it cost to repair the B2273 code?
Repair costs vary depending on the cause but generally range from $100 to $300 for common repairs like replacing the ignition switch or wiring fixes.
9. Can I clear the B2273 code without fixing the problem?
Clearing the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely return and could lead to further damage.
10. Can the B2273 code be caused by aftermarket modifications?
Yes, aftermarket ignition system modifications or improperly installed accessories can interfere with the ignition circuit and trigger this code.
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