Body, generic

B0980 Ignition Switch Run/Start Position Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Public sources give no meaning for B0980: J2012 extracts and OEM or NHTSA documents leave it out. The title concerns the signal by which the ignition switch reports its run and start positions. GM-era Saab vehicles use other numbers for this: the 9-3 column module sets B1440 0F when the +15 supply from the ignition switch module is open and B1368 00 when that input is shorted to battery; in both cases it blocks cranking and deactivates the steering lock. GM's 2011 Saab 9-5 energises an ignition 1 relay in run and start and stores B144A 02 for a grounded control line, giving a no-start or an engine that keeps running after the key is removed. FMVSS 114 defines the key-operated starting system and its anti-theft requirements.

Likely causes

Worn contacts in the ignition switch
Open or shorted ignition feed wire
Ignition relay or its control line faulty
Low battery voltage causing implausible signals

Symptoms

  • Engine does not crank although the key is turned
  • Ignition cannot be switched off or key cannot be removed
  • Steering lock or electrical consumers behave erratically

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–600
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

ignition switchbody control module

Related codes

B0990

References: saabwisonline.com, saabwisonline.com, saabwisonline.com, law.cornell.edu.