B2960 on Pontiac
Key/Immobilizer Communication Error
B2960 on Pontiac vehicles indicates key/immobilizer communication error. Au7o has documented this code across 1 Pontiac model — most commonly on G6. B2960 is a body/security code indicating a key or immobilizer (anti-theft) communication error, where the security module read sensor or key data that appears valid in form but does not match the expected, previously learned value. On many vehicles this involves a Passlock or transponder/immobilizer check that must pass before the computer allows the engine to start. When it fails, you typically get a security/anti-theft warning light and a no-start or no-crank condition. This is a manufacturer-specific code tied to the theft-deterrent system rather than an engine mechanical fault.
Common Causes of B2960
- •Faulty Passlock/ignition lock cylinder sensor
- •Damaged or worn transponder key or key chip
- •Wiring or connector fault in the security sensor circuit
- •Body control module (BCM) failure or needs relearn
- •Incomplete or lost immobilizer/key relearn procedure
- •Worn ignition lock cylinder
- •Aftermarket alarm or remote-start interference
B2960 on Pontiac by Model
Pontiac G6(1 issue)
- Passlock anti-theft no-start (security light on)2005-2010
The G6's Passlock theft-deterrent system can falsely trip, illuminating the security light and preventing the engine from starting. The common cause is a worn ignition lock cylinder/Passlock sensor that fails to read the lock rotation correctly. The well-known 10-minute relearn trick only resets it temporarily; the fault usually returns until the cylinder/sensor is replaced.
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What does B2960 mean on Pontiac?▼
B2960 stands for "Key/Immobilizer Communication Error." B2960 is a body/security code indicating a key or immobilizer (anti-theft) communication error, where the security module read sensor or key data that appears valid in form but does not match the expected, previously learned value. On many vehicles this involves a Passlock or transponder/immobilizer check that must pass before the computer allows the engine to start. When it fails, you typically get a security/anti-theft warning light and a no-start or no-crank condition. This is a manufacturer-specific code tied to the theft-deterrent system rather than an engine mechanical fault. On Pontiac specifically, this code is documented across 1 model.
What causes B2960 on Pontiac vehicles?▼
Common causes on Pontiac: Faulty Passlock/ignition lock cylinder sensor, Damaged or worn transponder key or key chip, Wiring or connector fault in the security sensor circuit, Body control module (BCM) failure or needs relearn, Incomplete or lost immobilizer/key relearn procedure. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B2960 on a Pontiac?▼
Repair costs vary widely depending on the root cause and specific Pontiac model.
Which Pontiac models have B2960 documented?▼
Au7o has documented B2960 on 1 Pontiac model: G6.