Engine Error
P0434
Heated Catalyst Temperature Below Threshold (Bank 2)
Severity
Medium
Symptoms
Check engine light on, vehicle fails readiness monitors
Common Causes
- Failed Bank 2 heated catalytic converter
- Defective temperature sensor in the cat
- Open circuit in the heating element
- Damaged wiring harness
How to Fix
- 1 Replace the catalytic converter
- 2 Replace the catalyst temperature sensor
- 3 Test and repair the heating circuit
- 4 Repair damaged wiring
Estimated Repair Cost
USD
$100
–
$2500
Temp sensor: $150; Catalytic converter: $1,000 - $2,500