Transmission Oil Pressure Too Low
The transmission oil pressure is lower than expected during operation.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer expects a certain pressure in the transmission fluid, usually around 40-60 psi when hot, but it's reading lower than that.
What the computer is actually seeing
The transmission control module (TCM) monitors input from a pressure sensor. If the pressure is too low, it triggers the fault code.
What a healthy reading looks like
Transmission fluid pressure should be between 40-60 psi with the engine running and the transmission in gear.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the transmission fluid level. Fill it to the recommended level if it’s low. Decision: If fluid level is correct, proceed to step 2.
- 22. Inspect the transmission fluid for contamination. Look for metal shavings or a burnt smell. Decision: If fluid looks good, proceed to step 3. If contaminated, change the fluid and filter and retest.
- 33. Test the transmission oil pressure using a mechanical gauge. Expect 40-60 psi. Decision: If pressure is low, proceed to step 4. If pressure is normal, the issue may be electrical.
- 44. Check the pressure sensor connector and wiring for damage or corrosion. Decision: If wiring is intact, replace the oil pressure sensor. If wiring is damaged, repair it and recheck.
Common causes
- Low transmission fluid level
- Faulty transmission oil pressure sensor
- Worn transmission pump or internals
- Blocked transmission cooler or passages
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive the vehicle with this code active?
It's not recommended to drive; low pressure can lead to transmission damage.
Will this fault code come back after resetting?
Yes, if the underlying issue isn't fixed, it'll likely return.
Why did this code appear alongside SPN 1716?
SPN 1716 also relates to transmission pressure; both suggest a problem in the pressure system.
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