{"product_id":"peugeot-citroen-4-pin-waterproof-ignition-coil-connector-female-oem-thp-ep6","title":"Peugeot Citroën 4-Pin Waterproof Ignition Coil Connector – Female OEM | THP EP6","description":"\u003ch2\u003ePeugeot \/ Citroën 4-Pin Waterproof Ignition Coil Connector – Female OEM\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e4-pin waterproof female connector\u003c\/strong\u003e serves Peugeot and Citroën ignition coil pack harnesses on PSA Group engines. The 4-pin configuration carries ignition trigger signal, coil primary power, ground, and a coil primary current feedback circuit — allowing the ECU to detect individual coil failures without a misfire event. The waterproof sealed design protects against oil contamination and moisture in the underhood environment. Available bare or with 15cm pre-wired leads.\u003c\/p\u003e\n\n\u003ch3\u003ePSA 4-Pin Ignition Connector – Circuit Function\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eSignal Type\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eCoil primary power\u003c\/td\u003e\n\u003ctd\u003e+12V switched\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eChassis ground\u003c\/td\u003e\n\u003ctd\u003eGround return\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eIgnition trigger signal\u003c\/td\u003e\n\u003ctd\u003eECU PWM output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eCoil primary current feedback\u003c\/td\u003e\n\u003ctd\u003eDiagnostic signal to ECU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003ePin 4 is the key differentiator between PSA's 3-pin and 4-pin ignition connectors. The feedback circuit allows the ECU to monitor coil primary current on each cylinder independently — a corroded pin 4 causes the ECU to log P0351–P0354 fault codes even when the coil itself is functional.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e4-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGender\u003c\/td\u003e\n\u003ctd\u003eFemale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon (PA66), waterproof sealed, high-temp rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Option\u003c\/td\u003e\n\u003ctd\u003eBare connector \/ 15cm pre-wired leads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eIgnition coil pack, ignition module harness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003ePeugeot, Citroën (PSA Group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFault Codes This Connector Fixes\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eAffected Pin\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0351\u003c\/td\u003e\n\u003ctd\u003eIgnition coil A primary circuit\u003c\/td\u003e\n\u003ctd\u003ePin 3 or 4 (cylinder 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0352\u003c\/td\u003e\n\u003ctd\u003eIgnition coil B primary circuit\u003c\/td\u003e\n\u003ctd\u003ePin 3 or 4 (cylinder 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0353\u003c\/td\u003e\n\u003ctd\u003eIgnition coil C primary circuit\u003c\/td\u003e\n\u003ctd\u003ePin 3 or 4 (cylinder 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0354\u003c\/td\u003e\n\u003ctd\u003eIgnition coil D primary circuit\u003c\/td\u003e\n\u003ctd\u003ePin 3 or 4 (cylinder 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0300–P0304\u003c\/td\u003e\n\u003ctd\u003eRandom\/cylinder-specific misfire\u003c\/td\u003e\n\u003ctd\u003ePin 1 or 2 (power\/ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e3-Pin vs 4-Pin PSA Ignition Connector – Which Do I Need?\u003c\/h3\u003e\n\u003cp\u003ePSA Group engines use both 3-pin and 4-pin ignition connectors depending on the coil pack design and engine generation. The 4-pin variant is used on coil packs with an integrated diagnostic feedback circuit (pin 4). If your vehicle logs P0351–P0354 codes without a confirmed coil failure, the 4-pin connector with its feedback circuit is the correct replacement. Cross-reference your vehicle's wiring diagram or compare the original connector pin count before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eWhy PSA Ignition Connectors Fail\u003c\/h3\u003e\n\u003cp\u003ePeugeot and Citroën ignition coil connectors are mounted directly on the coil pack, in close proximity to the engine block. Thermal cycling from engine heat, combined with oil vapour contamination from the cam cover area, accelerates terminal oxidation. On THP and EP6 engines, the coil pack is located in a recessed area of the cam cover that traps moisture — making this connector particularly susceptible to corrosion-induced ignition faults.\u003c\/p\u003e\n\n\u003ch3\u003eStep-by-Step Installation\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the vehicle battery (negative terminal first)\u003c\/li\u003e\n\u003cli\u003eAllow the engine to cool before working near the coil pack\u003c\/li\u003e\n\u003cli\u003eLocate the 4-pin ignition connector on the coil pack harness\u003c\/li\u003e\n\u003cli\u003eRelease the locking tab and unplug the original connector\u003c\/li\u003e\n\u003cli\u003eInspect all 4 terminals for corrosion, moisture, or deformation\u003c\/li\u003e\n\u003cli\u003eTransfer terminals to the new housing, or splice in the pre-wired 15cm variant\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and clear P0351–P0354 codes with Diagbox (PSA) or a compatible OBD2 scanner\u003c\/li\u003e\n\u003cli\u003ePerform a test drive and confirm no misfire codes return\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eVariant Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFemale (Bare)\u003c\/strong\u003e – 4-pin housing with terminals, no leads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFemale 15CM\u003c\/strong\u003e – Pre-wired with 15cm colour-coded leads for direct splice-in\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What Peugeot and Citroën models use this 4-pin ignition connector?\u003c\/strong\u003e\u003cbr\u003eA: Peugeot 207\/208\/307\/308\/3008\/508 and Citroën C3\/C4\/C5\/DS3\/DS4 with THP, EP6, and EP3 petrol engines. Cross-reference your vehicle's wiring diagram to confirm fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My car shows P0351 but the coil tests fine — is it the connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes, this is the classic symptom of a corroded pin 4 (feedback circuit). The ECU logs P0351–P0354 when it loses the coil primary current feedback signal, even if the coil itself is functional. Replace the connector and clear codes before replacing the coil.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use Diagbox to diagnose this fault?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Connect Diagbox and read ignition system fault codes. P0351–P0354 codes from the ECU module, combined with clean coil resistance readings, confirm a connector fault rather than a coil failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, terminals are included with all variants.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePeugeot 207\/208\/307\/308\/3008\/508 – THP\/EP6 ignition coil pack harness\u003c\/li\u003e\n\u003cli\u003eCitroën C3\/C4\/C5\/DS3\/DS4 – Ignition module connector\u003c\/li\u003e\n\u003cli\u003ePSA Group 4-pin waterproof ignition applications (THP, EP6, EP3 engines)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cable Parts Online","offers":[{"title":"Female 15CM","offer_id":47831528472821,"sku":"14:200004889#Female 15CM","price":21.2,"currency_code":"USD","in_stock":true},{"title":"Female","offer_id":47831528505589,"sku":"14:202642826#Female","price":13.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S4f04480e4d384d12a2686ce8a8c492c07.webp?v=1773629027","url":"https:\/\/www.csldmcml.com\/products\/peugeot-citroen-4-pin-waterproof-ignition-coil-connector-female-oem-thp-ep6","provider":"Cable Parts Online","version":"1.0","type":"link"}