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When

3-Digit Code Definitions

KOEO

CM

KOER

224

X

Erratic IDM input to processor

225

X

Knock Sensor (KS) signal not sensed during dynamic response test.

226

X

IDM signal not received

244

X

Camshaft Position (CMP) Sensor failure.

311

X

Thermactor air system inoperative  (right side)

312

X

Thermactor air misdirected upstream during self test.

313

X

Thermactor air not bypassed during self test.

314

X

Thermactor air system inoperative  (left side)

326

X

X

PFE or DPFE circuit voltage lower than expected with zero EVR duty cycle.

327

X

X

X

DPFE or EVP circuit below minimum voltage of 0.2 volts.

328

X

X

X

EVP circuit below minimum voltage of 0.24 volts.

332

X

X

EGR valve opening not detected.

334

X

X

X

DPFE or EVP circuit above the closed limit of 0.67 volts.

335

X

PFE or DPFE sensor voltage out of Self-Test range.

336

X

X

EVP or DPFE circuit voltage above maximum voltage with zero EVR duty cycle.

337

X

X

X

DPFE or EVP circuit above the maximum limit of 4.81 volts.

338

X

ECT lower than expected.

339

X

ECT higher than expected.

341

X

Octane Adjust shorting bar is not in or the OCT ADJ circuit is open.

381

X

Frequent A/C compressor clutch (ACCS) cycling less than 8.5 seconds.

411

X

Cannot control rpm during KOER low RPM check

412

X

Cannot control rpm during KOER high RPM check

452

X

Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles.

461

X

Engine over speed was detected

511

X

X

X

EEC permanent Read Only Memory (ROM) test failed.

512

X

EEC battery powered Keep Alive Memory (KAM) test failed.

513

X

Failure in EEC processor internal voltage.

519

X

Power steering pressure switch circuit open.

521

X

Power steering pressure switch did not change state during KOER test.

522

X

Vehicle not in PARK or NEUTRAL during KOEO

524

X

X

When the PCM commanded the fuel pump on, voltage was not detected on FPM.

525

X

X

Vehicle in gear or A/C on during Self-Test