B3094

No Response From PCM Received

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–333 (est.)

Symptoms

Check Engine light comes on
Switching other systems into emergency mode
Loss of power or incorrect engine operation
Problems starting the engine

Causes

Engine control module (PCM) malfunction
Open or short circuit in wiring harness
PCM power or ground problems
Damage to the CAN bus
Corrosion of connectors

How to Fix

Check PCM power and ground
Inspect the wiring harness for damage
Check the integrity of the CAN bus
Scan all modules for additional errors
Replace PCM if necessary

Related codes

U0100 U0121 P0606