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P2020 Fuel & Air Metering
Intake Manifold Runner Position Sensor Circuit Low Bank 2
P2020 means the ECM detected a low voltage signal from the intake manifold runner position sensor on Bank 2. This usually points to a short to ground, a wiring fault, or a failed sensor.
🚗 Yes, but the sensor fault should be repaired to restore normal control.
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🎯 Top Causes, Ranked by Likelihood
#1 Short to ground in the sensor circuit $50-$250
A chafed or pinched wire pulls the Bank 2 signal low.
#2 Failed runner position sensor $60-$300
A faulted Bank 2 sensor outputs a low signal.
#3 Corroded or damaged connector $50-$200
Corrosion creates a low-voltage path.
#4 Open reference or ground wire $50-$200
A missing reference forces the signal low.
🩺 Common Symptoms Check engine light on Possible reduced power Runner control may not operate May fail an emissions test 💰 Repair Cost: DIY vs Shop
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🔧 How to Diagnose P2020 1 Scan for related codes and check freeze frame
2 Inspect the Bank 2 sensor wiring for shorts to ground
3 Test the sensor signal and reference voltage
4 Check the connector for corrosion
❓ Frequently Asked Questions Can I drive with a P2020 code?
Short-term yes, but fix the sensor circuit soon to keep runner control working and pass emissions.
How much does it cost to fix P2020?
Wiring fixes are often cheap, while a new sensor runs $150 to $600 at a shop.
What is the most common cause of P2020?
A short to ground in the sensor wiring or a failed Bank 2 position sensor are the most common causes.
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