P0222

Q: What does OBD2 code P0222 mean?

P0222 means: Throttle/Pedal Position Sensor/Switch B Circuit Low Input. The secondary throttle position sensor (Sensor B) is reading a voltage lower than expected.

Throttle/Pedal Position Sensor/Switch B Circuit Low Input

The secondary throttle position sensor (Sensor B) is reading a voltage lower than expected.

SeverityModerate

CategoryEngine

Est. Repair Cost$200-$500

Code TypePowertrain

DIY RepairProfessional

⚡ Common Causes

›Faulty sensor
›Damaged wiring
›Poor ground connection

⚠️ Symptoms

›Check engine light
›Possible limp mode

✅ How to Fix — Step by Step

Step 1:Inspect wiring and ground
Step 2:Test sensor B voltage
Step 3:Replace throttle body if sensor has failed

🔧 Diagnostic Tools Required

✔OBD-II Diagnostic Scanner
✔Digital Multimeter
✔Fuel Pressure Gauge
✔Compression Tester
✔Spark Tester

Using the correct diagnostic tools helps identify the root cause of P0222 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: Check the throttle body ground strap condition - a poor ground can cause low-voltage readings on both sensors.

Repair Cost Estimate

Full Repair Estimate

$200-$500

DIY Possible?

PRO

Severity

Moderate

Frequently Asked Questions

What does OBD2 code P0222 mean?+

P0222 stands for Throttle/Pedal Position Sensor/Switch B Circuit Low Input. The secondary throttle position sensor (Sensor B) is reading a voltage lower than expected.

What causes code P0222?+

Faulty sensor; Damaged wiring; Poor ground connection

How do I fix code P0222?+

Inspect wiring and ground; Test sensor B voltage; Replace throttle body if sensor has failed

How much does it cost to fix P0222?+

Estimated repair cost for P0222 is $200-$500.

Is P0222 DIY-friendly?+

P0222 typically requires professional equipment and a qualified mechanic.