OBD Guide
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B222E

Flash Checksum Performance

B222E is an OBD-II diagnostic trouble code meaning: Flash Checksum Performance. Common causes: damage to the srs module memory chip due to power surges, corrosion of safety module connector contacts. Estimated repair cost: $278–889.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$278–889 (est.)

Symptoms

  • The airbag malfunction lamp on the instrument panel is on
  • No airbag deployment during crash tests
  • Malfunction of seat belt pretensioners
  • Periodic power failures of the SRS module are possible
  • Error appears during diagnostic scan

Causes

  • Damage to the SRS module memory chip due to power surges
  • Corrosion of safety module connector contacts
  • Low power supply to the SRS control unit
  • Violation of the integrity of the wiring harness to the system sensors
  • Factory defect in the electronic part of the module
  • Unsuccessful reprogramming or updating of module software
  • Moisture ingress into the control module housing
  • Electromagnetic interference from high-power electrical devices

How to Fix

  1. Connect a diagnostic scanner and fully read the B222E error with additional codes
  2. Check the integrity and resistance of the wiring harness to the SRS module (standard 0-2 Ohm)
  3. Inspect the SRS module connector for contact oxidation and damage.
  4. Clean the connector contacts with alcohol and dry
  5. Check the supply voltage on the SRS module (should be 12V ±0.5V)
  6. Check the condition of the SRS circuit fuses (usually 10-15A)
  7. Try to reinstall the module connector and rescan the error
  8. If the error persists, it will be necessary to replace the SRS control module followed by calibration of the collision sensors
  9. After replacement, conduct a full security system test

Related codes

B2223B2224B2225B2226U0100U0101B1001

FAQ

What does the B222E code mean?

B222E is an OBD-II diagnostic trouble code that indicates: Flash Checksum Performance

What causes a B222E error code?

The most common causes of B222E include: Damage to the SRS module memory chip due to power surges; Corrosion of safety module connector contacts; Low power supply to the SRS control unit; Violation of the integrity of the wiring harness to the system sensors.

How do I fix a B222E diagnostic trouble code?

To fix B222E: Connect a diagnostic scanner and fully read the B222E error with additional codes. Check the integrity and resistance of the wiring harness to the SRS module (standard 0-2 Ohm). Inspect the SRS module connector for contact oxidation and damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B222E?

Do not drive — repair immediately

How much does it cost to fix B222E?

The estimated repair cost for B222E is $278–889. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat