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2001 Dodge Caravan P0132, P0123, P0443, P0509, and P01714: Multiple Fault Codes After O2 Sensor Replacement - Stalling at Stoplights

Model: 2001 Dodge Caravan Fault Code: P0118 Posted: 2018-09-13 11:43

I own a 2001 Dodge Grand Caravan with a 3.3L engine. I've been experiencing the P0132 code for over a month, and despite replacing the upstream oxygen sensor twice (including returning the original one and receiving a 'Dinzo' brand replacement), the issue persists. The vehicle runs poorly under normal conditions. Three days ago, it began stalling at stoplights. Once I get the car moving above 40 mph, it runs fine—however, new fault codes have appeared: P0509, P01714, P0118, P0443, and P0123. This sudden surge of error codes has me extremely concerned. I suspect there may be an exhaust system blockage or wiring issue, but I'm not certain. Should I replace the throttle position sensor (TPS) or the downstream oxygen sensor? Any guidance would be greatly appreciated—my troubleshooting efforts have reached a dead end and I’m completely out of YouTube tutorials to follow. I’ve already added 10 oz of SeaFoam to 12 gallons of fuel, but this only triggered additional codes like P0509, P01714, P0118, and P0443. I’m now wondering if the root cause is a wiring fault or sensor circuit issue rather than a mechanical blockage.

Related fault codes

P0118P0123P0132P0509

Comments (4)

Anonymous 2018-09-13 20:29

Eight hours later, I've done nothing but add 10 oz of SeaFoam to 12 gallons of fuel. Now the vehicle is showing P0509, P01714, P0118, P0443, and P0123. What's going on here? A sudden surge of new codes is very concerning. I deeply respect those who have a genuine passion for automotive repair—whether it's through hands-on experience or technical expertise. While some may be more excited when money is involved, I've spent 48 years playing drums and would happily share insights if asked. For example, if someone were to ask whether their child pursuing drumming as a career should consider it seriously, I'd say: do anything except make a living from playing drums. Thanks for any advice or technical insight anyone can provide.

Anonymous 2018-09-14 08:33

P0132 - Upstream O2 sensor shorted to voltage (likely indicating wiring or sensor failure). P0118 - ECT (Engine Coolant Temperature) sensor voltage too high. P0123 - Throttle Position Sensor (TPS) voltage reading is too high. P0443 - Evaporative emission purge solenoid circuit fault. P0509 - IAC (Idle Air Control) motor circuit has a high signal reading. P01714 — This code appears to be invalid or misread; please confirm the exact value. It may actually refer to P0171 or P0174, which indicate lean air-fuel mixtures in Bank 1 or Bank 2. All these codes point toward potential circuit issues—especially wiring faults or sensor signal inaccuracies. Given that the original P0132 persists despite replacements, it's unlikely a faulty part is the root cause. Many O2 sensors on this model are sourced from Jeep or NTG suppliers and may have poor quality or compatibility. Recommended steps: - Review the vehicle’s wiring diagram. - Use an OBD-II scanner to check freeze frame data for common conditions (e.g., engine load, temperature). - Try clearing P0132 first, then drive under normal conditions to see if new codes reappear—this can help isolate whether a secondary issue is triggered by the original fault. Wiring diagrams and technical support: http://www.bbbind.com/free-tsb/

Anonymous 2018-09-14 08:57

Thanks for the detailed response. I'm now focusing on troubleshooting the P0132 code first. Appreciate the wiring diagram suggestion—I’m reviewing it and verifying that P01714 is indeed the correct code.

Anonymous 2018-09-14 19:32

Hello everyone. P01714 — This may actually be a misread or incorrect code, possibly intended as P0171 (System too lean - Bank 1) or P0174 (System too lean - Bank 2). Possible causes include: - Poor grounding connections - Faulty wiring harnesses - Inaccurate sensor readings due to electrical interference I’ve attached a diagram highlighting potential bad ground points. The file is labeled 'Possible bad earth.png' and has been viewed 1,130 times. The Throttle Position Sensor (TPS) is also a likely contributor to poor engine performance and stalling—especially at idle or stoplights. Please verify the TPS signal: it should provide a steady 5V reference voltage. When the throttle is closed, the signal should be between 0.5–4.5 volts; as the throttle opens, this value should gradually increase or decrease in a smooth, linear fashion.