DODGE CARAVAN DASHBOARD WARNING LIGHTS

Every light, every symptom, multiple diagnostic paths + real-world repair costs

Dodge Caravan (2008–2020) vans are reliable, but their complex electronics can trigger confusing warnings. We break down each light: what causes it, how to dig deeper (with pro techniques), and what you’ll likely pay at a shop or DIY. No fluff — just actionable data from ASE master techs.

red = pull over safely, amber = schedule inspection

• Issue: Powertrain, emissions, or transmission fault. Common Caravan causes: O2 sensor (P0138), loose gas cap (P0455), misfire (P0300-P0306) due to coil packs, or TIPM (totally integrated power module) glitches.
• Symptoms: rough idle, poor acceleration, reduced fuel economy, flashing light = severe misfire (catalyst damage risk).
• Diagnosis (multiple methods):
  • OBD2 scanner: read codes, freeze frame, live data (fuel trims, O2 voltages).
  • Visual: inspect gas cap, vacuum hoses, air intake for cracks (3.6L Pentastar common intake leaks).
  • Advanced: smoke test for evap leaks, compression test if misfire, fuel pressure test (returnless systems need adapter).
  • Dodge-specific: check for TIPM corrosion (underhood fuse box), perform throttle body relearn (some 2011+ models).
  • Oscilloscope: for crank/cam correlation (if no-start or intermittent).
• Repair cost range: gas cap $15-25, O2 sensor $220-480, ignition coil $140-350, intake gaskets $250-600, catalytic converter $950-2500 (varies by engine). Diagnostic fee $110-190.

• Issue: wheel speed sensor (WSS) failure, ABS module (common on 2008-2016 Caravan), corroded reluctor ring, or steering angle sensor.
• Symptoms: ABS light on, sometimes traction control off, speedometer may drop (if rear WSS fails).
• Diagnosis:
  • 1️⃣ Scan with ABS-capable tool (read Cxxxx codes, e.g., C2200 for module).
  • 2️⃣ Inspect WSS resistance (800-2000 ohms) and AC voltage while spinning hub.
  • 3️⃣ Check tone ring for cracks/rust (remove wheel bearing if needed).
  • 4️⃣ Test module power/ground, look for internal failure (bosch abs units often fail).
  • 5️⃣ Perform bidirectional tests: activate pump motor, valves.
• Repair cost: speed sensor $90-240, abs module rebuild $300-700, new module $950-1600, reluctor ring $150-400 (press work).

• Issue: Alternator not charging (bad diode/regulator), broken belt, battery internal short, or corroded terminals (Caravan side-post often loose).
• Symptoms: dim lights, dash flicker, slow crank, “click” when starting, eventually stall.
• Diagnosis:
  • Voltage test: engine off 12.4V+, running 13.8-14.8V.
  • Load test battery (at auto parts store often free).
  • Check alternator ripple with oscilloscope (bad diode causes AC ripple).
  • Inspect ground strap from engine to chassis (corrosion common).
  • Measure current draw (parasitic) if battery drains overnight.
• Repair cost: alternator $450-800 (reman), battery $150-300, belt $40-130, terminal cleaning $0-50.

• Issue: low oil level, worn oil pump (3.6L Pentastar pump failure after 100k), clogged pickup, or faulty pressure switch (very common).
• Symptoms: light flickers at idle, ticking noise from valvetrain, possible engine rattle.
• Diagnosis:
  • Verify oil level and condition (low, dirty).
  • Connect manual pressure gauge (spec: minimum 10 psi per 1000 rpm).
  • If pressure ok, suspect sensor/wiring (test with multimeter).
  • If pressure low, inspect pump, pressure relief valve, and bearing clearances.
  • Listen for chain rattle (tensioner issues).
• Repair cost: oil pressure switch $60-150, oil pump $800-1500 (including labor, pan removal), engine replacement if spun bearing $4000-7000.

• Issue: low coolant, stuck thermostat, failed water pump, radiator fan inoperative (Caravan dual fan common relay failure).
• Symptoms: temp gauge high, steam, sweet smell, coolant puddle.
• Diagnosis:
  • Check coolant level (reservoir and radiator when cold).
  • Inspect for leaks (hoses, water pump weep hole).
  • Verify fan operation: with A/C on both fans should run; use scan tool to command.
  • Infrared thermometer on thermostat housing to see if it opens.
  • Check for combustion gas in coolant (exhaust gas tester).
• Repair cost: thermostat $150-300, water pump $500-950, radiator $400-850, cooling fan assembly $350-700.

• Issue: clock spring broken (common), passenger occupancy sensor (under seat), seat belt pretensioner, or crash data memory.
• Symptoms: light stays on, airbag may not deploy, horn or steering wheel controls may fail (if clock spring).
• Diagnosis:
  • SRS scan tool (e.g., Autel, WiTECH) read codes B1XXX.
  • Inspect wiring under seats (yellow connectors) for damage or corrosion.
  • Check clock spring continuity with multimeter (while turning wheel).
  • Measure occupant sensor resistance (dealer-only often).
• Repair cost: clock spring $180-400, occupant sensor $500-1200, SRS module reset $150-300.

• Issue: low tire pressure, dead TPMS sensor battery (life 5-8 years), sensor damaged during tire change.
• Symptoms: amber light blinks then stays on (fault), or solid (low pressure).
• Diagnosis:
  • Check pressures with gauge.
  • Use TPMS trigger tool to see if sensors respond (IDs shown on scan tool).
  • If no response, sensor battery dead or antenna fault.
  • Inspect for aftermarket wheels without sensors.
• Repair cost: sensor replacement $60-150 each (including programming), relearn tool $30-100.

• Issue: low brake fluid (worn pads), e-brake engaged, brake fluid leak, ABS system fault (some models).
• Symptoms: red light on, possible soft pedal, fluid level low.
• Diagnosis:
  • Check fluid level (min/max).
  • Inspect pads/shoes thickness.
  • Look for leaks at calipers, wheel cylinders, lines.
  • Check e-brake switch adjustment.
  • Bleed system if spongy.
• Repair cost: brake fluid top-up $0-20, pad replacement $150-400 per axle, leak repair $200-800.

• Issue: low fluid, old fluid, torque converter clutch slip, towing heavy load, cooler blockage (Caravan 62TE transmission).
• Symptoms: light on, slipping shifts, burnt smell, delayed engagement.
• Diagnosis:
  • Check fluid level and condition (burnt = service).
  • Scan transmission temp (should be below 240°F).
  • Inspect cooler lines and radiator cooler.
  • Perform pressure test if slipping.
• Repair cost: fluid/filter service $200-400, auxiliary cooler $150-300, transmission rebuild $2800-4500.

• OBD2 plus: use Mode $06 data for catalyst monitor, misfire counters.
• Oscilloscope: test crank sensor pattern, CAN bus signals.
• Thermal imaging: find exhaust leaks, bad electrical connections.
• Fuel pressure transducer: diagnose fuel pump/pressure regulator.