P08E4 code meaning
Shift Solenoid L Control Circuit Low
Powertrain system Generic code P08xx codes Check engine light
What P08E4 means
Low-voltage fault in the control circuit of shift solenoid L. Usually it means a short to ground on the control wire, less often a coil with shorted windings that pulls the voltage down. No manufacturer documents this code publicly. GM's analogue for solenoid A, P0973 on the 6-speed units, needs a ground-short flag from the output hardware for 1.2 of 1.5 seconds and lights the MIL after one trip; Ford names P0973 a short to ground and runs the check continuously. CARB requires circuit monitoring. P08E5 is the high-voltage counterpart, P08E6 the open circuit. A shorted output usually forces the TCM into a safe substitute gear, and acceleration feels weaker.
P08E4 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P08E4
- Check engine or transmission warning light on
- Transmission locked in a substitute gear
- Weak acceleration
Common causes of P08E4
- Most likelyControl wire shorted to ground
- PossibleCoil with shorted windings
- Less likelyFluid or moisture in the connector creating a path to ground
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Shift solenoid lWiring harness
What each part of P08E4 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8 | Area: transmission. |
| E4 | The exact fault in that area. |
What to do next
- Note P08E4 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P08E4
What does P08E4 mean?
P08E4 means "Shift Solenoid L Control Circuit Low". Low-voltage fault in the control circuit of shift solenoid L. It is a generic code, so it means the same on every make.
Is it safe to drive with P08E4?
Drive gently and only to a workshop. With P08E4 the car can go into limp mode (reduced power) to protect itself.
Will P08E4 fail an emissions test?
Yes, it can. P08E4 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P08E4 to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P08E4 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.