P07B0 — Transmission Friction Element "H" Performance/Stuck Off

OBD2 code P07B0 flags a problem with the automatic transmission control (transmission friction element "H" performance/stuck off). Short, gentle driving to a shop is usually possible. Common culprits: valve body wear, low or degraded transmission fluid, failed shift or pressure control solenoid.

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive only if the transmission still shifts predictably, and avoid highway speeds. Driving with slipping or limp mode accelerates internal wear — every kilometre can add to the final repair bill.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P07B0 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the automatic transmission control for damage, corrosion, chafing or poor contact.
Subsystem check Command the transmission friction element "H" performance/ on and off with a scanner and watch the feedback signal; then remove and inspect the mechanism for sticking before replacing it.
Subsystem check Check transmission fluid level and condition — dark, burnt fluid points to internal wear.
Subsystem check Read transmission-specific codes and live data (solenoid states, input/output speed) with a capable scanner.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P07B0 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P07B0 (parts and labor, USD, independent shop rates): Transmission fluid service: $150–$350; Transmission rebuild or replacement: $2,500–$5,500; Valve body repair or replacement: $700–$1,500; Replace a shift solenoid: $300–$800. Overall, fixing P07B0 usually costs between $150 and $5,500. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

How much does it cost to fix P07B0?

Transmission fluid service — $150–$350; Transmission rebuild or replacement — $2,500–$5,500; Valve body repair or replacement — $700–$1,500; Replace a shift solenoid — $300–$800. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

What are the symptoms of P07B0?

Drivers most often notice: transmission stuck in one gear (limp mode), shuddering at highway speed, slipping between gears, no movement in severe cases.

What is the most common cause of P07B0?

The most common causes are: valve body wear, low or degraded transmission fluid, failed shift or pressure control solenoid.

Will P07B0 clear itself?

Sometimes P07B0 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

How do I diagnose P07B0 myself?

Start with a scan: confirm P07B0, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the transmission friction element "H" performance/, and verify the suspect component against live data before buying parts.

When your scan tool pulls code P07B0, it means the transmission control module has detected that a specific clutch pack inside your automatic gearbox is not responding correctly to commands. The official fault name—"Transmission Friction Element H Performance/Stuck Off"—describes a situation where the transmission's hydraulic or electrical actuator for friction element H has either failed to engage when requested or failed to disengage when it should have released. This is a powertrain-class code, which means it involves both the engine management system and the transmission control network.

Modern automatics use multiple friction elements (clutches, band servos, or one-way clutches) to route power through different gear ratios. Each friction element has its own actuator—usually a solenoid-controlled hydraulic circuit or an electric motor—that the transmission control unit (TCU) commands on and off based on driver input, vehicle speed, and load conditions. When the TCU sends a command but the physical feedback from the transmission does not match what was expected, P07B0 sets. The module typically needs to see this mismatch persist across multiple drive cycles before it lights the check engine light, though some manufacturers will trigger it on the first confirmed failure depending on severity.

To reach this conclusion, the TCU compares live sensor data against factory-calibrated operating windows. It looks at input and output shaft speeds, hydraulic line pressures, and the response timing of each friction element. When friction element H's response falls outside acceptable parameters—either too slow, incomplete, or absent entirely—the module logs P07B0 along with a freeze frame snapshot. That snapshot records engine RPM, calculated load, coolant temperature, and vehicle speed at the exact moment the fault occurred, giving you a starting point for diagnosis.

Common Symptoms of P07B0

The transmission drops into limp mode and refuses to shift out of a single gear, often third or fourth
A noticeable shudder or vibration develops at highway cruising speeds
Gear shifts feel sluggish, harsh, or accompanied by a slipping sensation before the gear engages
In severe cases, the vehicle may not move at all when shifted into drive or reverse
The check engine light remains illuminated after the fault first appears
Delayed engagement when shifting from park to drive or reverse
Unusual whining, grinding, or mechanical noise during gear transitions

What Causes P07B0?

Carbon buildup, dirt, or corrosion has jammed the mechanical mechanism of friction element H
Worn or broken return springs inside the actuator prevent proper disengagement
The shift solenoid or pressure control solenoid that drives friction element H has failed electrically
A weak electrical connection, corroded pin, or broken wire in the valve body harness interrupts the command signal
Transmission fluid has degraded or dropped below proper level, causing insufficient hydraulic pressure
The relay or transistor that supplies power to the friction element circuit has welded contacts, keeping the circuit permanently energized or permanently dead
Internal mechanical wear inside the transmission—worn clutch discs, damaged band, or failing torque converter—affects how friction element H operates under load
The transmission input or output speed sensor has failed, sending incorrect data to the TCU and triggering a false P07B0
The valve body itself has worn passages or a cracked body, preventing fluid from reaching friction element H at the correct pressure

How to Diagnose P07B0

Connect your OBD2 scanner and confirm P07B0 is currently stored or pending. Save the freeze frame data immediately—this information tells you engine RPM, load percentage, coolant temperature, and vehicle speed when the fault first triggered, which guides your inspection priorities.
Scan for any other transmission-related codes before clearing anything. Codes for related solenoids, sensors, or the valve body often point directly to the root cause rather than the symptom. Check manufacturer technical service bulletins for your specific make, model, and model year—many transmission faults have documented factory fixes or software updates that a dealer can apply.
Perform a thorough visual inspection of the transmission wiring harness and all connectors in the circuit. Look for chafed wires, bent pins, moisture intrusion, and corrosion. A loose or oxidized connector can mimic a failed component and trigger P07B0 when the TCU receives erratic feedback.
Use your scanner to command friction element H on and off while monitoring the live data stream. Compare the actual response against expected values for hydraulic pressure or clutch engagement. If the data shows no response, remove the valve body or side cover to physically inspect the mechanism for binding, carbon buildup, or a broken spring.
Check transmission fluid level with the engine running and fluid at operating temperature. Inspect the fluid's color and smell—dark brown or burnt-smelling fluid indicates clutch material breakdown or overheating, which points toward internal wear rather than an electrical fault.
Clear P07B0 after your inspection, then drive the vehicle through a complete drive cycle that reproduces the freeze frame conditions (same speed range, same load, same temperature). If the code returns, you have confirmed an active fault. If it stays cleared, the issue may have been a temporary electrical glitch.

Repair Options and Costs

Repair costs for P07B0 vary widely depending on which component is actually at fault. Here are typical scenarios at independent shop labor rates:

Transmission fluid drain and fill with filter replacement typically runs $150 to $350, addressing the most common and least expensive trigger for this code.
If the shift solenoid itself has failed, replacement (parts and labor) generally costs $300 to $800 depending on transmission design and accessibility.
A valve body with worn passages or a failed internal component may require repair or full replacement, running $700 to $1,500 for parts and installation.
When internal transmission wear is confirmed—worn clutch packs, damaged bands, or a failing torque converter—rebuilding or replacing the transmission typically costs $2,500 to $5,500 depending on whether you choose a used unit, rebuilt assembly, or new OEM part.

Total Cost Summary

For most vehicles experiencing P07B0, expect to spend between $150 and $5,500 total. The wide range reflects how diagnosis determines the actual repair. An experienced technician who rules out cheap fixes first—fluid level, wiring, connectors—before pursuing expensive internal work will get you to the right repair at the lowest cost. Always request a written diagnosis that identifies the failed component before approving any work.

Can You Drive with P07B0?

Proceed with caution. If the transmission still shifts and the vehicle moves without slipping, you can drive short distances to a repair facility at reduced speed. Avoid highway driving and heavy loads. However, continued operation with slipping gears, harsh engagement, or limp mode active will accelerate wear on clutches, the torque converter, and internal bearings—turning a $300 solenoid fix into a $4,000 transmission replacement. When in doubt, have the vehicle towed.