P1E4A
Control Module Redundant Drive Motor 1 Speed Sensing Circuit
P1E4A is an OBD-II diagnostic trouble code meaning: Control Module Redundant Drive Motor 1 Speed Sensing Circuit. Common causes: open or short circuit in the speed sensor circuit, engine speed sensor malfunction. Estimated repair cost: $56–278.
Symptoms
- The Check Engine light comes on
- Engine power limitation
- Switching to emergency mode
- Unstable operation of the hybrid system
- Possible problems starting the engine
Causes
- Open or short circuit in the speed sensor circuit
- Engine speed sensor malfunction
- Problems with the wiring harness to the backup module
- Software error in control module
- Mechanical damage to wiring
How to Fix
- Check the integrity of the wiring to the backup module
- Test the engine speed sensor
- Check the contact connections in the module
- Read error codes for additional diagnostics
- Reflash or replace the control module if necessary
Related codes
FAQ
What does the P1E4A code mean?
P1E4A is an OBD-II diagnostic trouble code that indicates: Control Module Redundant Drive Motor 1 Speed Sensing Circuit
What causes a P1E4A error code?
The most common causes of P1E4A include: Open or short circuit in the speed sensor circuit; Engine speed sensor malfunction; Problems with the wiring harness to the backup module; Software error in control module.
How do I fix a P1E4A diagnostic trouble code?
To fix P1E4A: Check the integrity of the wiring to the backup module. Test the engine speed sensor. Check the contact connections in the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1E4A?
Do not drive — repair immediately
How much does it cost to fix P1E4A?
The estimated repair cost for P1E4A is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat