P0618moderate severityPowertrain
Alternative Fuel Control Module KAM Error
on 1998 Toyota Tacoma 2.7L I4 · RWD
What this code means
The alternative fuel control module detected a keep-alive memory error. Stored adaptive data may be lost or corrupted.
Symptoms
- Check engine light on
- Poor drivability after restart
- Loss of learned values
Common causes
- Faulty control module
- Weak or failing battery power
- Poor module ground
- Internal memory fault
Diagnostic steps
- Check module power and ground
- Test battery and charging system
- Clear codes and retest
- Replace control module if needed
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0005
Fuel Shutoff Valve A Control Circuit/Open