What causes Ford code 212?

The ignition diagnostic module (IDM) input to the PCM was lost. The SPOUT circuit is shorted to ground. The wiring between the ICM and the PCM is damaged. The ICM failed and stopped reporting to the PCM. The PCM cannot read the IDM input.

How do I fix Ford code 212?

Check the SPOUT circuit for a short to ground. Check the IDM wiring between the ICM and the PCM for damage. Test the ICM and replace it only if it fails its own test. Test the ECM last, only after every circuit test has passed. Clear the code, then retest to confirm the IDM input returns.

Ford 212 Loss of ignition diagnostic module input to PCM or SPOUT circuit grounded

Q: What does Ford code 212 mean?

Ford code 212. Loss of ignition diagnostic module input to PCM or SPOUT circuit grounded.

Make: Ford (1981-1995)
Category: Powertrain - Ignition
Severity: Check Engine Light

How to read it

Code 212 reads as 2 flashes, pause, 1 flash, pause, 2 flashes on the check-engine light. Jumper the self-test input to signal return at the test connector, then run the key on engine off self test and the running self test, counting the check-engine flashes each time.

New to flash codes? The How to Read Ford EEC-IV Self-Test Codes walks through the test and what the numbers mean. The general OBD-I guide covers the rest.

What does Ford code 212 mean?

Loss of ignition diagnostic module input to PCM or SPOUT circuit grounded

Common causes of 212

The ignition diagnostic module (IDM) input to the PCM was lost.
The SPOUT circuit is shorted to ground.
The wiring between the ICM and the PCM is damaged.
The ICM failed and stopped reporting to the PCM.
The PCM cannot read the IDM input.

How to fix 212

Check the SPOUT circuit for a short to ground.
Check the IDM wiring between the ICM and the PCM for damage.
Test the ICM and replace it only if it fails its own test.
Test the ECM last, only after every circuit test has passed.
Clear the code, then retest to confirm the IDM input returns.

Source

Source review recorded

Sources and review

Review: checked against the recorded source material.

EEC-IV Ford trouble code table (MIL, description, type)
archived reference page (troublecodes.net via Wayback Machine)
Supports: code identity and meaning
Fetched directly. The three-digit row matches the description used in the data file.
https://web.archive.org/web/20030720231430id_/http://www.troublecodes.net:80/Ford/eec-iv.shtml
Ford trouble codes, Contour, Escort, Mustang, Probe, Taurus and Tempo 1992-1995 (code, description, probable cause)
archived reference page (troublecodes.net via Wayback Machine)
Supports: code identity and probable causes
Independent table on the same archive site with matching code identity and a probable cause column.
http://web.archive.org/web/20160501223306id_/http://www.troublecodes.net:80/ford/contour-escort-mustang-probe-taurus-tempo-1992-1995/
Ford EEC-IV trouble code table: code, fault location, probable cause (Crown Victoria, Mustang, Taurus, Thunderbird 1992-1995)
reference page (troublecodes.net)
Supports: per-code probable causes used for the page cause list and test order
Fetched 2026-09-30. The probable cause column is what the page lists, in source order, with the test order built from it.
https://www.troublecodes.net/ford/crown-victoria-mustang-cobralxgt-taurus-thunderbird-1992-1995/

Last updated 2026-10-10.

Report a correction for 212. Include your vehicle, the issue and a source if you have one.