Dima Posted May 19 Report Share Posted May 19 (edited) Hello, I have a 2015 Journey 2.4. The hose broke and the engine overheated. Before replacing the engine, the accelerator pedal sensor error P2127 was detected. We replaced the engine with a 2020 one, but the accelerator pedal sensor error persisted. Various tests were conducted, but the error remained. We decided to replace the accelerator pedal sensor, trying two different ones, but the problem persisted. We then decided to change the Powertrain Control Module and reflash it. Additionally, we installed another accelerator pedal sensor, and it started working. However, after 10 miles, the same error appeared again. The car behaves inconsistently, sometimes surging forward and backward with gentle pressure on the gas pedal. I noticed that occasionally, a red lightning bolt appears while driving. The car's wiring was checked for damage using a tester, but no breaks were found. The voltage at the accelerator pedal sensor constantly fluctuates, even when the engine is off. I understand that the problem lies in the lack of constant voltage at the accelerator pedal sensor, and when the red lightning bolt appears, it triggers the engine error. What needs to be checked to resolve this situation? Edited May 19 by Dima Quote Link to comment Share on other sites More sharing options...
John/Horace Posted May 21 Report Share Posted May 21 Often the lightning bolt symbol is tied to a electronic throttle body sensor issue. Not always with a clear code pointing to it. This sensor works with the accelerator pedal sensor, and it is a common failure item. If you have the other engine, try swapping over the throttle bodies. The plastic gears in throttle sensor wear out and cause problems. The original part is made by Hitachi. Rockauto sells,it. Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 First thing on a Journey. A known good and tested battery. When replacing the gas pedal, did you use the scan tool? There is a apps relearn function required. Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 23 Report Share Posted May 23 Thank you whole foods for the WiFi. I hope this helps. Quote Link to comment Share on other sites More sharing options...
Dean H Posted May 25 Report Share Posted May 25 Hi John H. These are the specific codes in the 2016 DJ service CD. Electronic Throttle Control (ETC) lightning ⚡ bolt warning light. ETC LIGHT Illuminated --- TP sensor codes P0121, P0122, P2135 ETC codes P2110 Accelerator pedal codes P2115, P2116, P2166, P2167 ETC LIGHT FLASHES ----- TP sensor code P0123 ACCELERATOR PEDAL codes P2122, P2123, P2127, P2128, P2138 ETC LIGHT FLASHING ---- ETC codes P2100, P2101, P2107 P2111, P2112 P2118 Dean Quote Link to comment Share on other sites More sharing options...
Dean H Posted June 6 Report Share Posted June 6 This explains the ETC lightning bolt light. Quote Link to comment Share on other sites More sharing options...
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