U0455 — Invalid Data Received From Restraints Occupant Classification System Module

vehicle network

Is it safe to drive?

Drive with caution The car drives normally, but with the SRS light on the airbags may not deploy in a crash. Treat it as a safety-critical repair: fine to drive to the shop, not fine to ignore for months.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm U0455 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 U0xxx 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 airbag / restraint system (SRS) for damage, corrosion, chafing or poor contact.
Subsystem check Read the SRS module with a scanner that supports airbag systems — generic OBD2 readers cannot see these codes.
Subsystem check Inspect under-seat connectors — they are often disturbed by seat movement or cleaning.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm U0455 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for U0455 (parts and labor, USD, independent shop rates): Reconnect or repair SRS wiring/connectors: $80–$250; Replace a sensor or clockspring: $150–$500; SRS module reset or replacement: $300–$1,000. Overall, fixing U0455 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

What is the most common cause of U0455?

The most common causes are: failed clockspring (driver airbag circuit), faulty impact or occupancy sensor, damaged wiring under seats or in the steering column.

What does OBD2 code U0455 mean?

Invalid Data Received From Restraints Occupant Classification System Module (U0455): a vehicle network fault affecting the airbag / restraint system (SRS). Short, gentle driving to a shop is usually possible. Most often caused by failed clockspring (driver airbag circuit), faulty impact or occupancy sensor, damaged wiring under seats or in the steering column.

Will U0455 clear itself?

Sometimes U0455 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.

What are the symptoms of U0455?

Drivers most often notice: airbag system disabled message, no other driving symptoms, airbag (SRS) warning light on.

Is it safe to drive with U0455?

The car drives normally, but with the SRS light on the airbags may not deploy in a crash. Treat it as a safety-critical repair: fine to drive to the shop, not fine to ignore for months.

What does U0455 mean?

The engine control module sets U0455 when it detects a fault in the airbag / restraint system (SRS). In practical terms: invalid data received from restraints occupant classification system module. The code belongs to the vehicle network group of OBD2 codes.

The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores U0455 and switches on the warning light. Freeze frame data saved with the code shows the exact conditions — rpm, load, temperature, speed — at the moment the fault was detected, which is the best starting point for diagnosis.

What causes U0455?

SRS control module fault or stored crash data
faulty impact or occupancy sensor
depleted backup battery or low system voltage
failed clockspring (driver airbag circuit)
damaged wiring under seats or in the steering column

Common symptoms of U0455

airbag system disabled message
no other driving symptoms
airbag (SRS) warning light on

How to diagnose U0455

Connect an OBD2 scanner, confirm U0455 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many U0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Visually inspect the wiring harness and connectors related to the airbag / restraint system (SRS) for damage, corrosion, chafing or poor contact.
Read the SRS module with a scanner that supports airbag systems — generic OBD2 readers cannot see these codes.
Inspect under-seat connectors — they are often disturbed by seat movement or cleaning.
Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm U0455 does not return.

How to fix U0455

Start with the cheapest and most common causes before replacing expensive parts:

Reconnect or repair SRS wiring/connectors — $80–$250
Replace a sensor or clockspring — $150–$500
SRS module reset or replacement — $300–$1,000

How much does it cost to fix U0455?

Repair cost depends on which component actually failed. Typical scenarios for U0455 (parts and labor, USD, independent shop rates):

Reconnect or repair SRS wiring/connectors: $80–$250
Replace a sensor or clockspring: $150–$500
SRS module reset or replacement: $300–$1,000

Overall, fixing U0455 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with U0455?