P1E18
Auxiliary Transmission Fluid Pump Control Module 5 Volt Reference Circuit
P1E18 is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Control Module 5 Volt Reference Circuit. Common causes: open or short circuit in 5v circuit, auxiliary pump control module malfunction. Estimated repair cost: $56–167.
Symptoms
- The Check Engine light comes on
- Incorrect operation of the automatic transmission auxiliary pump
- Gear shifting problems
- Reduced transmission efficiency
- Possible jerking when changing gears
Causes
- Open or short circuit in 5V circuit
- Auxiliary pump control module malfunction
- Wiring harness damage
- Corrosion of contacts or connectors
- Problems with the main power supply
How to Fix
- Check the integrity of the circuit fuses
- Diagnose the condition of wiring and connectors
- Check the voltage at the output of the 5V source
- Test the pump control module
- If necessary, replace the control module
Related codes
FAQ
What does the P1E18 code mean?
P1E18 is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Control Module 5 Volt Reference Circuit
What causes a P1E18 error code?
The most common causes of P1E18 include: Open or short circuit in 5V circuit; Auxiliary pump control module malfunction; Wiring harness damage; Corrosion of contacts or connectors.
How do I fix a P1E18 diagnostic trouble code?
To fix P1E18: Check the integrity of the circuit fuses. Diagnose the condition of wiring and connectors. Check the voltage at the output of the 5V source. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1E18?
Limited driving only, diagnose soon
How much does it cost to fix P1E18?
The estimated repair cost for P1E18 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat