P0749 code meaning
Pressure Control Solenoid A Intermittent
Powertrain system Generic code P07xx codes Check engine light
What P0749 means
Pressure control solenoid A sets line or clutch pressure by current; most are 'normally high', so with no current – as in limp mode – maximum pressure applies. 'A' is usually the line pressure valve, on GM clutch-to-clutch transmissions (6T, 8L, 9T) the pressure valve of clutch 1. Ford does not use P0745–P0749 but P0960–P0963. P0749 is an intermittent fault in the circuit of this valve. No manufacturer document available to us uses it; Mitsubishi defines the sister code for valve B (P0779) as circuit open or shorted to positive for 1 s. Brief current or voltage dropouts make the module switch the valve off – maximum pressure – and retest it, so harsh shifts or limp mode appear at times and vanish after a restart.
P0749 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 4 hours
- Clears after repairAfter a drive cycle
Symptoms of P0749
- Harsh shifts at times
- Occasional limp mode, normal again after restart
- Warning lamp (sometimes only stored)
Common causes of P0749
- Most likelyLoose contact or corrosion at the transmission connector
- PossibleChafed harness (intermittent short)
- PossibleValve with temperature-dependent winding fault
- Less likelyVoltage dips or poor ground
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid aTransmission valve bodyTransmission wiringTransmission control module
What each part of P0749 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7 | Area: transmission. |
| 49 | The exact fault in that area. |
What to do next
- Note P0749 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 P0749
What does P0749 mean?
P0749 means "Pressure Control Solenoid A Intermittent". Pressure control solenoid A sets line or clutch pressure by current; most are 'normally high', so with no current – as in limp mode – maximum pressure applies. It is a generic code, so it means the same on every make.
Is it safe to drive with P0749?
Drive gently and only to a workshop. With P0749 the car can go into limp mode (reduced power) to protect itself.
Will P0749 fail an emissions test?
Yes, it can. P0749 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 P0749 to fix?
Difficulty: medium. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P0749 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.