P0639
Throttle Actuator Control Range/Performance Bank 2
P0639 is an OBD-II diagnostic trouble code meaning: Throttle Actuator Control Range/Performance Bank 2. Common causes: bank 2 throttle valve is dirty or mechanically stuck, bank 2 throttle position sensor (tps) malfunction. Estimated repair cost: $11–333.
Symptoms
- The engine has entered limp mode.
- Vibration and rough engine operation
- Check Engine light comes on
- Power reduction
- Rough idle
Causes
- Bank 2 throttle valve is dirty or mechanically stuck
- Bank 2 Throttle Position Sensor (TPS) malfunction
- Bank 2 throttle actuator motor malfunction
- Damage to the wiring or connectors of the bank 2 circuit
- ECU malfunction
How to Fix
- Check and compare Bank 1 and Bank 2 TPS data on scanner
- Clean bank 2 throttle body
- Check Bank 2 TPS Signal
- Inspect the bank 2 inductor wiring and connectors.
- Adapt both throttle assemblies using a scanner
- If the malfunction is confirmed, replace the throttle assembly of bank 2
Related codes
Error P0639 by Vehicle Brand
FAQ
What does the P0639 code mean?
P0639 is an OBD-II diagnostic trouble code that indicates: Throttle Actuator Control Range/Performance Bank 2
What causes a P0639 error code?
The most common causes of P0639 include: Bank 2 throttle valve is dirty or mechanically stuck; Bank 2 Throttle Position Sensor (TPS) malfunction; Bank 2 throttle actuator motor malfunction; Damage to the wiring or connectors of the bank 2 circuit.
How do I fix a P0639 diagnostic trouble code?
To fix P0639: Check and compare Bank 1 and Bank 2 TPS data on scanner. Clean bank 2 throttle body. Check Bank 2 TPS Signal. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0639?
Do not drive — repair immediately
How much does it cost to fix P0639?
The estimated repair cost for P0639 is $11–333. Actual cost depends on your vehicle, location, and labor rates.
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