P1130Fuel & Air Metering

A/F Sensor Circuit Range/Performance (Toyota, Bank 1 Sensor 1)

P1130 is a Toyota/Lexus code for an air/fuel ratio sensor circuit range or performance problem on Bank 1 Sensor 1. The A/F sensor signal is out of the expected range.

🚗 Yes, short-term, but expect worse fuel economy and emissions.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Failing A/F ratio sensor$100-$350

45%

An aged wideband A/F sensor drifts out of range.

#2Wiring or connector fault$50-$250

30%

A corroded connector or damaged wire disrupts the signal.

#3Exhaust leak or fuel trim issue$50-$400

25%

Leaks or a lean/rich condition skew the sensor reading.

🩺 Common Symptoms

Check engine light
Reduced fuel economy
Rough running
Failed emissions test

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$350

Shop Cost

$150-$500

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🔧 How to Diagnose P1130

1Inspect the A/F sensor wiring and connector

2Check for exhaust leaks near the sensor

3Review fuel trims for lean or rich bias

4Replace the A/F sensor if it stays out of range

❓ Frequently Asked Questions

Can I drive with P1130?

Short-term yes, but it affects economy and emissions. Diagnose within a week or two.

Is P1130 a Toyota code?

Yes, P1130 is a Toyota/Lexus A/F sensor circuit range/performance code for Bank 1 Sensor 1.

What fixes P1130?

Replacing the A/F ratio sensor usually resolves it after ruling out wiring and exhaust leaks.

🔗 Related Codes

P1133P1135P0125