DESCRIPTION The 1-2 shift valve performs shifting to 1st gear and other gears. DTC Code DTC Detection Condition Trouble Area P0781 The gear required by the TCM does not match the actual gear when driving (2 trip detection logic). Valve body is blocked up or stuck (1-2 shift valve) Shift solenoid valve SLT remains open…
U1169
U1169 LOST COMMUNICATION WITH INTRUSION SENSOR 1 For a complete wiring diagram Refer to Section 8W When Monitored: Continuously while the VTSS is armed. Set Condition:If the Intrusion Transceiver Module does not receive messages from the Cargo Intrusion Sensor over the LIN bus. Possible Causes INTERMITTENT CONDITION (A412) FUSED B+ CIRCUIT OPEN (Z912) GROUND CIRCUIT…
B1613
B1613 Definition: PANEL ILLUMINATION CONTROL CIRCUIT LOW When Monitored:With the ignition on and the Panel Illumination active. Set Condition:Panel Illumination Status LOW. Possible Causes (E12) PANEL LAMPS DRIVER CIRCUIT SHORTED TO GROUND A/C HEATER CONTROL LAMP (FRONT AND/OR REAR) SHORTED TO GROUND FRONT WINDOW SWITCH LAMP SHORTED TO GROUND SHIFT ASSEMBLY LAMP SHORTED TO GROUND…
P0171
P0171 FUEL SYSTEM 1/1 LEAN For a complete wiring diagramRefer to Section 8W. Theory of OperationThe fuel feedback system will maintain a stoichiometric fuel/air mixture, 14.7:1, by modifying the injector pulse width according to the oxygen content of the exhaust gas. The PCM makes short term and long term fuel corrections to maintain stoichiometric fuel/air…
U0168
U0168 LOST COMMUNICATION WITH VEHICLE SECURITY MODULE (SKREEM/WCM) For a complete wiring diagramRefer to Section 8W When Monitored:Continuously while the system is active. Set Condition:The ECM doesn’t receive a Bus Message from the SKREEM/WCM. Possible Causes INTERMITTENT DTCCAN BUS OPEN OR SHORTED CONDITIONTOTALLY INTEGRATED POWER MODULE (TIPM)ENGINE CONTROL MODULE (ECM) Always perform the Pre-Diagnostic Troubleshooting…
P0442
P0442 Evaporative Emission System Leak Detected (Small Leak) The Evaporative System (EVAP) prevents the fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system draws the fuel vapors from the fuel tank and temporarily stores them in the charcoal canister. When the engine is running and other conditions allow, the fuel…
P0449
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction The Evaporative System (EVAP) prevents the fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system traps the fuel vapors and temporarily stores them in the charcoal canister. When the engine is running and other conditions allow, the fuel vapors are drawn…
P0505
P0505 Idle Control System Malfunction The code P0505 – Idle Control System Malfunction means that the engine computer cannot regulate the idle speed properly, or the actual idle speed varies from the target idle speed by a certain amount. The accompanied symptoms may include difficulty starting, hesitation, stalling at idle, fluctuating idle speed, as well…
U0121
U0121 LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE For a complete wiring diagramRefer to Section 8WWhen Monitored:Continuously while the system is active.Set Condition:The ECM doesn’t receive a Bus Message from the Anti-lock Brake Module. Possible CausesINTERMITTENT DTCCAN BUS OPEN OR SHORTED CONDITIONANTI-LOCK BRAKE MODULEENGINE CONTROL MODULE (ECM) Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to…
P1776
P1776 SOLENOID SWITCH VALVE LATCHED IN LR POSITION For a complete wiring diagramRefer to Section 8W.Theory of OperationThe Solenoid Switch Valve, an internal, hydraulically operated valve, controls the direction of the transmission fluid when the L/R solenoid is energized. When the solenoid switch valve is in the downshifted position and the L/R solenoid is…
P2A00
P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1) Trouble Area Open or short in A/F sensor (bank 1, 2 sensor 1) A/F sensor (bank 1, 2 sensor1) ECM
P0683
P0683 GLOW PLUG MODULE SIGNAL CIRCUIT MALFUNCTION For a complete wiring diagram Refer to Section 8W When Monitored: With the ignition on. Set Condition: The ECM detects a malfunction on the (D330) Glow Plug Module Signal or (K202) Glow Plug Module Control circuit. Possible Causes ENGINE CONTROL MODULE GLOW PLUG MODULE (D330)/(K202) GLOW PLUG MODULE…
P0400
P0400 Exhaust Gas Recirculation Flow Detection After warming up engine and idling for 60 seconds, maintain engine speed at 2500 rpm for 40 seconds, drive vehicle and perform engine break deceleration by fully closing accelerator when engine speed is 2000 rpm or more Condition The target and actual positions of the No. 1 EGR valve…
P1145
P1145 Mass Air Flow Sensor Possible Symptoms MIL on Excessive smoke from Exhaust Reduced Engine Output Possible Causes Fuse or Wiring Harness Issue Failed Mass Air Flow Sensor Possible Solutions Check Fuses and Wiring Harness, see Factory Repair Manual Replace Mass Air Flow Sensor
P1161
P1161 Manifold Temp Sensor Open or Short to + Possible Symptoms Probably no symptoms Possible Causes Failure in wiring and/or connections Manifold Temp Sensor (G72) is defective Possible Solutions Check wiring and connections Replace Manifold Temp Sensor (G72)
P1177
P1177 O2 Correction Behind Catalyst Possible Causes Intake Air System leaking Oxygen Sensor(s) and/or Oxygen Sensor Control faulty Possible Solutions Check Intake Air System for Leaks (False Air) Check Oxygen Sensor(s) and/or Oxygen Sensor Control (all of them!)
P0011
P0011 Camshaft Position “A” – Timing Over-Advanced or System Performance (Bank 1) DESCRIPTION The ECM optimizes the valve timing using the VVT system to control the intake valve camshaft. The VVT system includes the ECM, OCV and VVT actuator. The ECM sends a target “duty-cycle” control signal to the OCV. This control signal, applied to…
P0756
P0756 Shift Solenoid “B” Performance (Shift Solenoid Valve S2) DESCRIPTION The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical…
P2195
P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) DESCRIPTION The Air-fuel Ratio (A/F) sensor generates voltage* in response to the actual air-fuel ratio. This sensor output voltage provide feedback to the ECM. The ECM uses the feedback to control the air-fuel ratio. Using the sensor output voltage, the ECM determines the…
HOW TO CHECKING THE PCM POWER AND GROUNDS?
POSSIBLE CAUSES FUSED B+ CIRCUIT OPEN FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN PCM GROUND CIRCUIT(S) OPEN DIAGNOSTIC PROCEDURE NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures. Turn the ignition off. Disconnect the PCM harness connectors. Using a 12-volt test light connected to 12-volts, check both ECM ground circuits in ECM harness connector. Did…