Eec Iv 3 Digit Codes

Eec Iv 3 Digit Codes - These codes are pplicable only to some 1991 and up vehicles.

These codes are pplicable only to some 1991 and up vehicles.

Note: Some codes are for specific model cars only, so diregard anything about 1.9L cars...LOL

Differences in test mode noted as:

(O) =Key On Engine Off test
(R) =Key On Engine Running test
(M) =Memory code

111 System checks OK

112 (O,M) Intake Air Temperature (IAT) sensor is/was low or grounded -

113 (O,M) IAT sensor is/was high or open -

114 (O,R) IAT sensor out of range -

116 (O,R) Engine Coolant (ECT) sensor out of range -

117 (O,M) ECT sensor is/was low or grounded -

118 (O,M) ECT sensor is/was high or open -

121 (O,R,M) Throttle Position (TP) sensor out of range -

122 (O,M) TP low (possibly grounded or open circuit) -

123 (O,M) TP is/was high or short to power -

124 (M) TP voltage was higher than expected -

125 (M) TP voltage was lower than expected -

126 (O,R,M) MAP or BARO sensor out of range -

128 (M) MAP vacuum has not been changing - check vacuum lines -

129 (R) No MAP or Mass Air Flow sensor change during "goose" test -

136 (R) Oxygen sensor not switching/system lean Left or Front HO2S -

137 (R) Oxygen sensor not switching/system rich Left or Front HO2S -

138 (R) Fault in Cold Start Injector circuit -

139 (M) Oxygen sensor not switching Left or Front HO2S -

144 (M) Oxygen sensor not switching Single, Right or Rear HO2S -

157 (R,M) Mass Air Flow signal is/was low or grounded -

158 (O,R,M) MAF sensor is/was high or short to power -

159 (O,R) MAF sensor is/was out of range -

167 (R) No Throttle Position sensor change in "goose" test (must get at least 25% rotation) -

171 (M) Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S - l

172 (R,M) Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S -

173 (R,M) Oxygen sensor not switching - system is or was rich - Single, Right or Rear HO2S -

174 (M) Oxygen sensor was slow in switching Single, Right or Rear HO2S -

175 (M) Oxygen sensor not switching - system was at adaptive limits - Left or Front HO2S -

176 (M) Oxygen sensor not switching - system is or was lean Left or Front HO2S -

177 (M) Oxygen sensor not switching - system was rich Left or Front HO2S -

178 (M) Oxygen sensor was slow in switching Left or Front HO2S -

179 (M) Fuel system was rich at part throttle Single, Right or Rear HO2S -

181 (M) Fuel system was lean at part throttle Single, Right or Rear HO2S -

182 (M) Fuel system was rich at idle Single, Right or Rear HO2S -

183 (M) Fuel system was lean at idle Single, Right or Rear HO2S -

184 (M) Mass Air (MAF) output higher than expected -

185 (M) Mass Air (MAF) output lower than expected -

186 (M) Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected -

187 Injector pulse width shorter than expected or Mass Air Flow (MAF) higher than expected -

188 (M) Fuel system was rich at part throttle - Left or Front HO2S -

189 (M) Fuel system was lean at part throttle - Left or Front HO2S -

191 (M) Fuel system was rich at idle - Left or Front HO2S -

192 (M) Fuel system was lean at idle - Left or Front HO2S -

193 Failure in Flexible Fuel (FF) sensor circuit -

194 (M) Perform cylinder balance test to check for inoperative injectors

195 (M) Perform cylinder balance test to check for inoperative injectors

211 (M) Ignition PIP signal was erratic or missing -

212 (M) Ignition TACH signal was erratic (module/wiring) or SPOUT circuit fault -

213 (R) Ignition SPOUT or SAW circuit open or shorted -

214 (M) Error in Cylinder ID (CID) circuit or signal -

215 (M) Primary circuit failure - ignition coil 1 -

216 (M) Primary circuit failure - ignition coil 2 -

217 (M) Primary circuit failure - ignition coil 3 -

218 (M) IDM signal open or high or left coil pack failure –

219 (M) SPOUT circuit failure, timing defaulted to 10 degrees -

222 (M) IDM open or high or right coil pack failure -

223 (M) Dual Plug (DPI), SPOUT or IDM circuit fault -

224 (M) Failure in ignition coil primary circuit -

225 (R) Knock sensor not tested (ignore if not pinging) -

226 (O) Ignition Diagnostic Monitor (IDM) signal fault -

232 (M) EI primary coil circuit failure -

238 (M) EI primary circuit failure - ignition coil 4 -

311 (R) AIR system not working - Single, Right or Rear HO2S -

312 (R) AIR not diverting -

313 (R) AIR not bypassing -

314 (R) AIR inoperative, Left or Front HO2S -

326 (R,M) Pressure Feedback EGR shows low pressure EGR not seating or not seating intermittantly -

327 (O,R,M) EGR feedback signal is/was low -

328 (O,R,M) EGR Valve Position (EVP) is/was low -

332 (R,M) EGR did not open/respond during test or if memory code, did not open intermittantly -

334 (O,R,M) EVP sensor is/was high -

335 (O) EGR feedback signal is/was out of range -

336 (O,R,M) PFE sensor signal is/was was high -

337 (O,R,M) EGR feedback signal is/was was high -

338 (M) Cooling system did not heat up (check cooling system / thermostat operation)

339 (M) Cooling system overheated (check cooling system / thermostat operation)

341 (O) Octane jumper installed (information only code to notify you if it is installed)

411 (R) Idle speed system not controlling idle properly (generally idle too high) -

412 (R) Idle speed system not controlling idle properly (generally idle too low) -

452 (M) Vehicle Speed Sensor (VSS) problem

511 (O) No power to PCM pin 1 or bad PCM (processor)

512 (M) Memory power (PCM pin 1) was interrupted - Was battery disconnected ?

513 (O) Replace processor (PCM) (internal failure)

519 (O) PSP switch/circuit open -

521 (R) Wheel not turned during test or PSP problem -

522 (O) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault -
Transmission MLP sensor out of range in park -

524 Problem in low speed fuel pump circuit -

525 (O,M) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault -

528 (M) System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch) -

529 (M) Data Communications Link to processor failure Service any EEC codes, erase memory and retest. If code is still present refer to instrument cluster diagnosis manual.

533 (M) Data Communications Link to instrument cluster failure - see 529

536 (O,R,M) Brake On Off open or shorted to ground -

538 (R) System did not receive "goose" test -

539 (O) System shows voltage at PCM pin 10. Is A/C on ?

542 (O,M) Fuel pump open, bad ground or always on - -

543 (O) Fuel pump monitor circuit shows no power -
(M) (Service 556 code first if present) Fuel pump relay or battery power feed was open -

551 Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit -

552 (O) AIRB solenoid/circuit failure -

553 (O) AIRD solenoid/circuit failure -

554 (O) Fuel Press Regulator Control solenoid/circuit fault -

556 (O,M) Fuel pump relay primary circuit fault -

557 (O,M) Low speed pump relay primary circuit fault -

558 (O) EGR vacuum regulator solenoid/circuit failure -

559 (O) A/C relay primary circuit fault -

563 (O) High Fan Control (HFC) circuit failure -

564 (O) Fan Control (FC) circuit failure -

565 (O) Canister Purge 1 solenoid/circuit failure -

566 (O) transmission 3/4 shift solenoid/circuit -

569 (O) Canister Purge 2 solenoid/circuit failure -

578 (M) A/C pressure sensor VREF short to ground -

579 (M) ACP sensor did not change with A/C on -

581 (M) Cooling fan current was excessive -

582 (O) Open cooling fan circuit -

583 (M) Fuel pump current was excessive -

584 (M) Open power ground circuit -

585 (M) A/C clutch current was excessive -

586 (M) Open circuit in A/C clutch -

587 (O, M) Communication problem between PCM and Variable Control Relay Module (VCRM) -

617 (M) Transmission shift failure (1/2 shift) -

618 (M) Transmission shift failure (2/3 shift) -

619 (M) Transmission shift failure (3/4 shift) -

621 (O) Solenoid/circuit failure - shift solenoid 1 -

622 (O) Solenoid/circuit failure - shift solenoid 2 -

624 (O,M) Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high -

625 (O,M) Solenoid/circuit failure - Electronic Pressure Control (EPC) current is low -

626 (O) Transmission Coast Clutch (CCS) Solenoid/circuit fault -

627 (O) Torque Converter Clutch circuit fault -

628 (M) Excessive converter clutch slippage -

629 (O,M) Torque Converter Clutch circuit fault -

631 (O) Overdrive Cancel Light circuit problem -

632 (R) E4OD - Transmission Control Switch (TCS) should be cycled once between engine ID and Goose test

633 (O) 4x4L switch should be in 4x2 or 4x4 high for the test

634 (O,M) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault Electronic shift transmission - Manual Lever Position (MLP) sensor out of range in PARK -

636 (O,R) Transmission Oil Temperature (TOT) sensor out of range -

637 (O,M) TOT sensor is/was high or open -

638 (O,M) TOT sensor is/was low or grounded -

639 (R,M) Transmission Speed sensor (TSS) circuit fault -

641 (O) Transmission solenoid/circuit failure Shift Solenoid 3 -

643 (O)(M) Torque Converter Clutch (TCC) circuit -

645 (M) Transmission 1st gear failure -

646 (M) Transmission 2nd gear failure -

647 (M) Transmission 3rd gear failure -

648 (M) Transmission 4th gear failure -

649 (M) Transmission EPC system failure -

651 (M) Transmission EPC solenoid/circuit fault -

652 (O) Torque Converter Clutch (TCC) circuit fault -

654 (O) Transmission selector not in PARK -

656 (M) Torque Converter Clutch (TCC) slip -

657 (M) Transmission temperature was excessive -

998 (R) Did not pass Key On Engine Off test yet (Get 111 in KOEO first)
(O) Transmission Electronic Pressure Control (EPC) solenoid/circuit fault -



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