🔢
P0796 is a high-severity diagnostic code. Reading the freeze-frame data and any paired codes is the fastest way to narrow it down. See top-rated scanners on Amazon ↗
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🎯 Top Causes & Probability
55%
#1 - Most Likely
Stuck Solenoid Valve
Debris in the fluid has wedged the solenoid spool, preventing it from moving. Replace solenoid or valve body.
🔨 Part
$60-$240
👨🔧 Labor
$240-$700
⚡ DIY Difficulty
Hard
25%
#2 - Check First
Worn Valve Body Bore
The bore the solenoid sits in is worn, allowing fluid to bypass. Valve body replacement is typical fix.
🔨 Part
$300-$900
👨🔧 Labor
$240-$600
⚡ DIY Difficulty
Hard
15%
#3 - Less Common
Old / Contaminated ATF
A fluid change with the correct spec sometimes restores normal operation if caught early.
🔨 Part
$40-$140
👨🔧 Labor
$120-$300
⚡ DIY Difficulty
Medium
🚗 Most Affected Vehicles
🚫 Is It Safe to Drive?
No. Harsh shifts and slipping are common. Limit driving until repaired.
🔧 Step-by-Step Diagnosis
- Check ATF level using the proper procedure - Toyota automatics with check plug only.
- Live-data the solenoid command vs. actual line pressure - A stuck solenoid shows the TCM commanding changes that do not translate to pressure change.
- Drop the pan and pull the solenoid - Inspect for debris and stuck spool.
- Replace solenoid or valve body - The valve body is the cleaner fix if multiple PCS codes are present.
❓ Frequently Asked Questions
How is P0796 different from P0795?
P0795 is the basic circuit. P0796 specifically means the solenoid mechanically did not respond - typically stuck.
Is a flush a bad idea?
On a transmission with codes, only a drain-and-fill is safe. A pressure flush can dislodge debris and make things worse.
Will a new valve body fix this?
In most stuck-off cases, yes. Cost: $700-$1400 installed.
Can I just clear the code and drive?
It will return quickly and shift problems make this risky for the transmission.
How much at a Toyota dealer?
$800-$1400 for solenoid or valve body service.