P2799
Electric/Auxiliary Transmission Fluid Pump A Control Circuit High
P2799 is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump A Control Circuit High. Common causes: short circuit in pump control circuit, transmission fluid auxiliary pump malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- The car goes into emergency gearbox mode
- Difficult or harsh gear shifting
- Reduced transmission efficiency
- Unusual noises from the transmission area
Causes
- Short circuit in pump control circuit
- Transmission fluid auxiliary pump malfunction
- Problems with the pump circuit relay or fuse
- Broken or damaged wiring
- Transmission control module (TCM) malfunction
How to Fix
- Check fuses and relays associated with the pump
- Inspect the wiring harness for damage
- Check resistance and voltage in the pump circuit
- Test the operation of the auxiliary pump
- If necessary, replace the pump or wiring
Related codes
Error P2799 by Vehicle Brand
FAQ
What does the P2799 code mean?
P2799 is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump A Control Circuit High
What causes a P2799 error code?
The most common causes of P2799 include: Short circuit in pump control circuit; Transmission fluid auxiliary pump malfunction; Problems with the pump circuit relay or fuse; Broken or damaged wiring.
How do I fix a P2799 diagnostic trouble code?
To fix P2799: Check fuses and relays associated with the pump. Inspect the wiring harness for damage. Check resistance and voltage in the pump circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2799?
Limited driving only, diagnose soon
How much does it cost to fix P2799?
The estimated repair cost for P2799 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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