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Code 13: Barometric (BARO) Sensor

NOTE: Barometric sensor is built into ECM. Circuit testing is not required.

Turn ignition off. Remove BACK-UP fuse (10-amp) from underhood fuse/relay box for 10 seconds to reset ECM. Check ECM for fault codes. If Code 13 is not present, problem is intermittent. Check for poor connections at ECM connector. Test drive vehicle and check again. If Code 13 is present, replace ECM and retest.