🔢
P0758 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
Failed Shift Solenoid B
The B solenoid coil is open or shorted. Usually replaceable through the transmission pan on most vehicles.
🔨 Part
$30-$160
👨🔧 Labor
$200-$600
⚡ DIY Difficulty
Hard
25%
#2 - Check First
Contaminated ATF / Debris
Worn-out fluid carries metal fragments that get stuck in the solenoid. A flush and filter sometimes restore function.
🔨 Part
$40-$120
👨🔧 Labor
$120-$280
⚡ DIY Difficulty
Medium
15%
#3 - Less Common
Internal Harness Damage
The pass-through harness inside the trans has shorted to the case. Requires pan drop and internal harness replacement.
🔨 Part
$60-$220
👨🔧 Labor
$200-$500
⚡ DIY Difficulty
Hard
🚗 Most Affected Vehicles
🚫 Is It Safe to Drive?
No. Expect transmission limp mode. Drive carefully and only as needed.
🔧 Step-by-Step Diagnosis
- Check ATF level and condition - Dirty or burnt fluid is a sign of bigger problems.
- Test solenoid resistance - Backprobe the case connector. Most B solenoids spec 10-30 ohms.
- Look for other transmission codes - Multiple solenoid codes usually mean a harness issue, not all solenoids failing at once.
- Drop the pan and inspect - Verify debris level on magnet and condition of internal harness.
❓ Frequently Asked Questions
Can I drive with P0758?
Limp mode means short trips only. Long drives in third gear will overheat the trans.
Will the same fix as P0753 work?
Same diagnosis flow, but you target solenoid B instead of A. Solenoids are usually replaced as a set anyway.
Is the transmission dying?
Not necessarily. Solenoid failures are common and not the same as a worn-out transmission.
How much does a shop charge?
$250-$650 for a solenoid swap. $700-$1400 for a valve body.
Will Honda fluid spec matter?
Critically. Honda automatics require Honda ATF-DW1. Using Dexron causes P0758-class faults.