B2022 Engine Trouble Code
What is B2022?
B2022 indicates potential catalytic converter failure. If completely failed, your vehicle may not run properly and fuel economy will suffer significantly. Average replacement cost is $2,000–$2,140. This repair requires professional service and should not be delayed.
Code Information
| Code Type: | OBD-II Body (B) Trouble Code |
| System: | Body |
| Code: | B2022 |
B2022 Symptoms
Check Engine Light
Illuminated dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration
Starting Problems
Difficulty starting the engine
B2022 Code Structure
Understanding what each digit means in the B2022 body trouble code:
| B | 2 | 0 | 2 | 2 |
|---|---|---|---|---|
| Body Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Ambient Air Temperature Sensor Circuit Low | Turbocharger Boost Sensor A Circuit Low | Glow Plug/Heater Circuit 'A' Malfunction |
How to Fix B2022
Diagnostic Steps:
The catalytic converter has oxygen sensors before and after it. When warm and in closed-loop mode, the upstream O2 sensor reading should fluctuate, while downstream should remain steady.
Repair Solution:
Disconnected, dirty, or fouled spark plugs commonly prevent proper engine operation. Replace spark plugs every season or 25 hours. Verify proper spark plug gap. If plugs are good, check ignition components: spark plug wires, coils, and ignition module.
Technical Notes:
Parts or components should not be replaced based solely on B2022 DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
B2022 Description
B2022 engine trouble code is related to Glow Plug/Heater Circuit 'A' Malfunction.
Main Cause
The primary reason for B2022 OBD-II Engine Trouble Code is: Ambient Air Temperature Sensor Circuit Low.